Can you dive if you can't swim?

Can't swim to dive.Diving is the kind of travel diving with oxygen cylinders. It is possible to go to the sea as long as it is simple training. The premise is that there are no restricted diseases, such as hypertension of heart disease.Before diving, there will be a coach to teach you, and the process is very simple. You only need to master a few basic actions and gestures.

Types of diving

The submersible is divided into: hard diving, soft diving, semi -closed lock circuit air supply type, should be delivered, and self -sufficient air.

Divided by diving: non -saturated diving, saturated diving; types of breathing gases: air diving, nitrogen, hybrid gases (artificial air diving), mixture, oxygen mixed gas (artificial air diving), hydrogen, oxygen mixed gas (hydrogen, oxygen, mixed gas (Artificial air diving), other hybrid gases.

What are the Diving equipment

1. Facial mirror

The diving mirrors on the market now are mainly divided into three types: silicone, rubber, and PVC; rubber and PVC materials generally have some odors. The rubber material has rarely appeared in the leisure market. Generally, a few diving mirrors are made of silicone materialsIt is non -toxic and tasteless. The price is slightly more expensive than PVC, but it is softer, more durable, and more comfortable to wear.

The appearance is mainly divided into dual lenses and single lenses. There are no differences in these two uses, and the field of vision is similar. The advantage of dual lenses can be equipped with close -up lenses; the selection is mainly based on whether it meets its face shape and personal preferences; there is another kind of one; there is also one is that there is one.Fullface mask; Full mask, the design of this type of mask makes the divers not have to include the respirator in the mouth and combine the communication interface, mainly to enable the diver to achieve underwater calls; mostly for engineering diving.

2. Breathing Tube

The material of the respiratory Tube is also mainly divided into silicone, PVC, which is better for silicone tubes; structures are divided into all-dry and non-dry type;It is welcomed by junior players to prevent water from entering; but from a practical perspective, it is still a traditional non -dry respiratory Tube with simple structure and smoother breathing.

Buying note: The choice of respiratory Tube must meet the principles of ergonomics and mechanical design. The diameter size and length must be appropriate to facilitate drainage, and the design of the water stop valve must be available to prevent seawater from pouring in.The part of the bite should be the best choice for bite comfort.

3. Cold -proof clothing

Cold -proof clothing, also known as diving suit.It is mainly divided into wet, semi -dry, all -dry, wet type divided into 3 mm, 5 mm, 7 mm and other thickness.Wearing semi -dry and full -drying potentials, you can keep your body not wet, and you can also wear warm clothes in the interior. The insulation effect is the best.The choice of diving coats is mainly determined according to the water temperature of the diving environment; tropical or temperate waters, 3 mm thick wetwear are the most commonly used; the lower the water temperature, the thicker the need to choose a divingSemi -dry or full -drying; all dry clothes can even achieve under ice diving.

Buying note: In order to achieve the effect of preventing the cold, the cold -proof clothing must be fitted, soft, easy to unload, and not easy to deform, and does not affect the ability of divers to move.Secondly, choose the tricks you like.detailed

How to achieve ear pressure balance when diving

1. Pin the nose and breath.Ear pressure balance refers to the same techniques that make the pressure in the ear the same as the surrounding environmental pressure.Generally, the more commonly used way is to pinch the nose and drum, pinch the nose, block the nostrils, and gently breathe with the nose. At this time, you will feel that the eardrums are swollen and giggled.

2. In addition to the method of pinching the nose, you can also reach the ear pressure balance by swallowing the mouth, yawning or swinging the mandibular mandibular.

Essential emergency safety knowledge for diving

1. Cache

If psychological tension, too cold water, or staying in the water for too long, cramps may be cramps.The preparation activities before the water should be sufficient, don't take too long in the water.Once cramps occur, don't panic.For example, the toe cramping, then immediately flex the legs, pull the toes open and straighten the toes; the calf cramp, take a breath first, lie on the water on the water, stop the toes with the hand plate, and stretch the calf forward.Stretch and relax the contracted muscles; when the fingers are cramp, hold it with a fist, and then open it hard to liberate it so repeatedly.

2. Dizziness

The main reason is that the diving time is too long, the blood is gathered in the lower limbs, the cerebral ischemia, and the body's energy consumes greater the body's excessive fatigue.Immediately go ashore to rest, keep your body insulation, and drink some light sugar salt water appropriately.

3. Nausea, vomiting

The nose will be dirty water.Hurry up ashore and then press Zhongli and Neiguan with your fingers.To prevent enteritis, you can also eat a few petals.

4. Itchy eyes

It may be caused by poor water.After ashore, you should rinse your eyes immediately with clean saline, and then use chloramphenicol or erythromycin eye drops. It is best to make hot compresses before going to bed.

5. Headache

The reason may be inadequate blood supply to chronic rhinitis, water or body cold, temporary cerebrovascular spasm.At this time, you should go ashore quickly. Use your thumb to press the top of the head, the sun and the lack of acupoints, and then apply it with a hot towel, and drink a cup of hot boiling water to improve.

6. Abdominal pain blocked

Just after eating or diving on an empty stomach can cause abdominal bloating.At this time, you should go ashore to lie on your back, press the tip of the toe to the middle courtyard, go to the courtyard or Zusanli, and take 3 to 5 ml of water at the same time at the same time, and apply the abdomen with a hot hand towel.

7, ear pain, tinnitus

It may be that the ears are irrigated or the nose is watering, and the head can be tilted to the side of the ears. Pull the earlobe vigorously and use the same side leg to make a single foot jump.Or the palms of the palms of the ear canal, block the ears tightly with your hands, tilted your head in the left ear to the left, and then quickly pull the hand, and the water will be sucked out.

8. Itchy Skin and rash

Main Skin allergies.Immediately ashore.If you take a piece of Stimi or Poemin, it will soon improve.

What do you need to pay attention to in diving exercise

1. First of all, for beginners, diving is still difficult, because diving is a systematic engineering. If you want to make high -level diving, you should learn slowly. As a beginner, you should accept high -level diving. It is best to accept it.Related training.

2. Follow the principle of the two of them, that is, two people need to stay together from entering the water to the shore. They must keep together. When diving, keep up with the coach and always connect with the coach's gestures, so that it is safer.

3. When choosing diving, we must choose a regular and safe diving area. Do not choose cheaper areas because of expensive prices, may be cheap areas, no safety guarantee, and belonging to informal diving enterprises.

4. You should wear equipment before diving. This is necessary. Check whether the equipment is fit and the function is normal. Learn the use of respiratory Tube and regulator, surface rest method, emergency treatment, etc.Of course, two people can help each other to check the equipment.

What are the benefits of diving

1. Performance

The leisure diving that people yearn for is in a state of weightlessness. Entering a completely different space, let people completely relax the body and mind, let everything casually and natural, watching a variety of colorful on the bottom of the quiet sea.Strange corals and fish.Communicate with your companions with gestures and eyes.This feeling cannot be obtained on land, and people who have not really sneaked into the sea cannot be obtained.

2. The exercise of the body

Diving exercises can increase lung activity, enhance the strength of the main muscle groups, improve swimming skills, exercise physical fitness, and even lose weight.

3. Getting knowledge

In addition to being able to master many physiological, physiological and medical knowledge and marine biological knowledge about diving, you can also learn first aid, drowning rescue and other knowledge.

4. fitness, beauty

Because diving breathing is a compressed air, oxygen molecules can better penetrate into the Skin through the flow of blood and speed up the Skin's metabolism, thereby achieving the effect of beauty and Skin.Because the heat energy consumed in the water is larger than on the land, diving exercises have also become a good way to lose weight and fitness.

5. Temk of will

Diving can also hone their will and cultivate the spirit of the team.Diving can exercise the psychological quality of people, let people learn how to face strange environments, and enhance the ability to deal with crisis and emergencies.No matter how high the divers and diving coaches are, they must strictly abide by the submarine companion system. They must not dive alone. The partners must take care and help with each other.

Can yoga really shake

After practicing yoga, the weight did not decrease, but the body did become strong, because fat has been slowly exercising into a density muscle during the practice process!The fat becomes muscles,In fact, it will appear visuallyThe feeling of "thin", yoga can shape your shape, dress is more beautiful.

Of course, this also needs to be accumulated for a long time. It is impossible to make immediate shadows in the early stage, and the muscles are standing in a short time.But at the beginning, the most important purpose of learning yoga is definitely not thin, but to know your own body with many yoga movements that can exercise to deep muscles.First understand, and then strengthen the forging chain, any movement must be gradual.

precautions for yoga

Warm is important.Do not do difficult movements at the beginning, so as not to cause exercise damage.It is best to do some yoga warm -up movements, step by step to avoid the body from being frightened.

When practicing, be sure to keep the room relatively quiet, and the air must circulate.Don't practice in a too soft bed, prepare a yoga mat, then wear pajamas, and practice.

Practicing yoga does not necessarily need to draw tigers according to the cat. It is done completely according to the actions of the CD. The practitioners can remember how much movements can be done, and the order of action is not unchanged. It should be desired as long as the breathing is stable and calm.

When practicing yoga,Every action must be maintained3to5Secondary breathAfter practicing yoga, you should feel the joy of the mood rather than the sour body, or even pain.

Do not force the yoga. yoga may not be done every day. Only when you are in a good mood, good body, and time to do yoga when you are free, you can do more with less.

The more difficult the yoga action is, the better

Many people are not clear for the purpose of practicing yoga.There are many ways to practice yoga, and some of them are difficult for many people to do.Because everyone's physical foundation is different, it is difficult to do it if there is no exercise process.And it will cause damage to the body.Generally speaking, the difficulty position has high requirements for all aspects of the body, and often requires long -term stretching or support. For people with insufficient muscle strength and flexibility, it is easy to cause tendon injuries and cause tendon injuries.The joint becomes unstable.

yoga's entry action teaching

Preparation of yoga needs to be prepared for yoga

Quiet places (the best place to be closed), Yoga mats, yoga music, head hoop, yoga clothing, towels, pure water.

The process of practicing yoga

Pose 1: Prayer style

Method: stand upright and move together.Hold your hands on your hands.Relax the whole body.Mix evenly.

Benefits: Establish a state of concentration and tranquility, and prepare for the practice.

Pose 2: Show arm type (hold your arms upward)

Method: Raise your head upward, and the arms are separated from the shoulders.Raise your head and your upper body slightly.

Breathing: Inhale when raising your arms.

Benefits: Stretch the abdominal organs, so eliminate excessive fat and improve digestion.exercise arm and shoulder muscles.Strengthen spinal nerves and open pulmonary and lobe.

Pose 3: Forest type (hand -tapped)

Method: The body flexes forward until any side of the hands or fingers touches the feet, or on the ground in front of the feet.Touch your legs before using your forehead, but do not strain.Keep your knees straight.

Breathing: exhale when your body is flexed.Try to shrink the abdomen at the final position and exhale the maximum.

Benefits: help to eliminate or prevent stomach or abdominal diseases, and reduce excess fat in the abdomen.Improve digestion.It helps to eliminate constipation, make the spine soft, and strengthen the spinal nerves.

Pose 4: Horse -riding style

Method: Try to stretch your right leg back.At the same time, bend your left leg, but keep your left foot in place.Straighten your arms, in situ in situ.At the end of the action, the body weight should be supported by both hands, left foot, right knee and right toe.In the last posture, the head should be lifted back, the back into a bow shape, and staring upwards.

Breathing: Inhale when the right leg is stretched backwards.

Benefits: massage abdominal organs and improve their activity functions.Strengthen the muscles of both legs and get nerve balance.

Pose 5: Mountain -style style

Method: Straighten your legs, move your feet together, lying your body forward, your hips are raised in the air, and your head is low, making it located between your arms.The body should become two sides of the triangle.In the final position, your legs and arms should be straightened. In this posture, try your two feet to the ground.

Breathing: Straighten your legs and bend your torso.

Benefits: Strengthen your arms and legs and muscles.Stiring the spine in the opposite posture, which further helps the softness of the spine.Strengthen spinal nerves and provide them with fresh blood.

Pose 6: Eight -Body Delivery Earth

Method: The body is lowered, so that when the last position of this posture is only toes, knees, chest, hands, and chin touching the ground.The hips and abdomen should be slightly lift away from the ground.

Breathing: After exhausting, you can take the breath.

Power: Strengthen thighs and arm muscles.Develop chest.

Pose seven: Snake -like

Method: Straighten your arms and raise your body from your waist.The head faces backwards, the same position at this stage is the same as the last position of the cobra.

Breathing: Inhale when you lift your body and the back of the bow.

Power: The abdomen is compressed, which helps to squeeze out congestion from the abdominal organs.This posture is very useful for all stomach problems, including indigestion and stool.The back of the bow exercise the spine to soft the muscles and rejuvenate the most important spinal nerve.

[Handheld GPS] GPS Handheld Machine Use skills Handheld Basic Knowledge

1. GPS basic knowledge

1. The principle of GPS

GPS is the abbreviation of Globol Position System (Global Positioning System), which is established by the US government and provides free services to global users.The complete GPS system is divided into two parts: heaven and underground: there are 24 satellites in the sky that are constantly turning, so that at least 3 satellites can be seen in any corner of the earth;The GPS receiver is the GPS that we often say.

When the GPS receiver receives three or more satellite signals, you can calculate the land coordinates where the receiver is located. If you receive four satellites, you can also calculate the altitude. At the same time, the time signal of the satellite system alsoIt is transmitted to the GPS. If you want to watch, the time on the GPS is the most reliable.

It should be noted that in addition to the US GPS system, Russia and Europe have also established their own global positioning systems, but the most commonly used in the United States is the GPS system.

2. The coordinate system used by GPS

When we describe the geographical location, the commonly used method is the latitude coordinates.The latitude and latitude coordinate system is based on the British Greenwich and equators as zero points of longitude and latitude.China is located in the scope of the about 70--120 degrees of about the east, within the north latitude -degree, and Xinjiang is located.

In the GPS system, the display method of latitude and longitude can generally choose according to your hobbies. Generally, there are "HDDD.DDDDDD" (degree. Degree), "HDDD*mm.mmm" (degree. Divide.), "HDDD*mm)"SS" (degree. Second. Second).

The meridian (connected from the Antarctic to the Arctic) length is 39940.67 kilometers.

The length of the equatorial circle is 40075.36 kilometers, the Beijing and Urumqi regions are about 40 degrees north latitude, and the long latitude circle is 40075*sin (90-40).Essence

3. The accuracy of GPS and SA policy

Theoretically, the positioning accuracy of GPS can be reached to the rice level. For security considerations, the American guy restricts the positioning of civilian GPS and formulated a SA policy (Selective availation.) When the SA policy is implemented, the positioning accuracy is only 20-30 meters, but the SA policy has been canceled, and the positioning accuracy of civil GPS can reach about 10 meters.

When receiving more than 4 valid satellite signals, GPS can achieve three -dimensional positioning, that is, it can be counted as high altitude, but I feel that the accuracy of the altitude is not reliable.

4. How to position handheld GPS

Generally, the Mark and GOTO keys are available on GPS.The Mark key is used for positioning, that is, the current coordinates are stored in the memory, and GPS will automatically make a name for this point; GOTO is used for navigation.Name, then press Goto and select the name of that point, you can calculate the straight line distance from this place to the known point.Mark and GOTO (that is, positioning and ranging) are the most basic features of GPS, and other functions are based on this or serving them.Generally speaking, as long as you know how to turn on the organ, know positioning and navigation, you can deal with it freely in outdoor activities.

5. The computer format of the GPS coordinate system

I can store 500 points in my GPS. Some GPSs have data cables, which can be transferred on the computer to the computer, vice versa.In this way, the data in GPS is very safe (imagine the workload of copying 300 GPS on the paper!).After the GPS point is imported, the GPS point database can be established after a certain data conversion, which is convenient for querying.Of course, you can also organize the manual input GPS dot into files on the computer, and then switch to the GPS, which is much more convenient than entering the GPS.Not only that, if there are GIS software (geographical information system) and electronic maps in the computer system, the GPS airpoint can also be projected directly to the electronic map.But this process is more complicated.

Garming provides a MapSource software with a global 1: 400000 electronic map that can directly project the GPS airpoint to the electronic map. However, for Outdoor enthusiasts, the electronic map of 1: 4000000 is useless.

A complete computer data line kit includes data cables, satellite antennas, vehicle power supplies (on the cigarette lighter), MAPSOURCE software and electronic maps (or GIS software and professional electronic maps).

Second, the cooperation of GPS and map

In Outdoor crossing activities, the most commonly used map ratio is 1: 250000 and 1: 100,000, and the 1cm on the map is equivalent to 2.5 kilometers and 1 km of actual distance.(About the Outdoor map, there will be a special article).The cooperation of GPS and maps has nothing more than the following two situations: one is to find the target point (such as the proportion of the Camping site and an important inflection point) on the map before departureWhen walking in the ancient road in 2001, he entered a set of GPS points); the other was to find the point on the map in the Outdoor activity after the important point was located to judge the current position.The coordinates found from the professional map are "hddd*mm" ss "(degree.. Second) format. If GPS uses" hddd*mm.mmm "Conversion.

3. Typical usage of GPS in outdoor activities

OK! Basic principles are finished. Now we have arrived outdoors. The eyes of the players are watching you and the GPS in your hands. Do you have confidence?If not yet, continue to see the introduction below.

1. How to position

Now that the team has reached the place of walking, how can you record the coordinates of the starting point!It's very simple. Open the GPS and take a few minutes to finish the dressing, GPS has completed the search satellite and automatically jumped to the data page. At this time, click Mark (positioning or small flag).The airpoint generated by the GPS automatic sequence, pressing confirmation, the point is stored.Of course, don't forget to let the secretary record this point.

2. How to determine the distance from the target point

At 3 pm, the team reached a place where the rest was.Hey, this is hard to fall. Before I set off, I boiled overnight and had already input the coordinates of the target point into the GPS. Remember that the point number seemed to be "first end".Take out the GPS and wait for the search satellite after booting. After a few minutes, the data comes out.FIRST END "point, press confirmation, at this time the screen display" distance target point "My end" 5523m ", good," we are 5.5 kilometers away from the target ", and announced loudly.After speaking, he glanced at the mountains and rugged mountain roads in front of him, adding "straight distance".At this time, just listening to fluttering and fluttering, players Zixin, Yang Ge, and VV fainted on the spot.

3. How to determine the distance of any two points

In the evening, I finally arrived at the Camping site that day.At this time, the team member drunk and danced to the sun: "Captain of the paste, from today's starting point to tomorrow's end point?" From the end point to the end point, that is, from 110 points Second End, this is a relatively distance, simple.Open the GPS, you don't have to wait for the satellite (wait 3 minutes, there is no face), find 110 points in the aircraft table, and then move the cursor to the reference point (Refenrence) column below, enter the Second End, OK!GPS comes out immediately, 110 points from the reference point Second End 16.8km.

4. Go to the right direction under the guidance of GPS

There is a great problem with most GPS, that is, there is no built -in compass. When you let it navigate -SECOND END, it will only tell you "3 kilometers from the target point and 80 degrees in terms of directional angle."3 kilometers well, how to find 80 degrees?Good hand, hold GPS, face its head to the north, (your head is also facing the north).What?Where is North?Look at the compass!

OK, found the North, at this time, GPS will have an arrow to the Secong End, which is about to point to your right hand.Understand!The ancestors of the GPS are based on the north as 0 degrees, the east is 90 degrees, the south is 180 degrees, and the west is 270 degrees.Let the maps, GPS, compass and your head facing north, it looks more convenient.If there is no compass, GPS can also measure your forward direction and speed in the movement state, so as to find "North", but if it is in the ravine, it is troublesome.I used to walk back and forth in the north in the straight gap below the chrysanthemum platform, and I fell 3 followers.), I also blame my eyes without long eyes. On cloudy days, there was no sun.Since then, I have 3 compass every time I go out.

5. Typical parameter settings of GPS

First of all, GPS must be set up as a public system. The American guy uses British, Mile, and 1 Mile about 17xx meters. How can we have our 1km = 1000 meters good calculation (so they invented the computer).

Secondly, adjust the latitude and longitude format to "hddd*mm" ss "(degree. Second) format or" hddd*mm.mmm "(degree. Divide.) Format.

Then, the map projection was confirmed to be WGS84, and the time zone was in District 8 (China in East 8th).

6. experience and skills

Generally, the battery can be used for 20 hours in a row. I usually open it when I use it. I walk down a day and open 7-10 times. In this way, a pair of batteries can be up to 10 mountains.

At each fixed point, it is best to record or recording (or ask the secretary to record), because the GPS point number is automatically generated by numbers, the point is too much, and no matter how good the brain is.

Be sure to use it with the compass. Otherwise, there is no GPS.

To use GPS, ravine, dense forests, you have to touch your luck.When taking the car, the window can be barely used.

Each activity, generally 5-10 points are almost the same.

Adidas' shoe code is large or small

If the size of Adidas shoes you buy is wrong, this is normal, because different brands have their own shoes size tables, and the shoes are different, and they will have different sense of foot.

For example, Adidas's football shoes and tennis shoes may be small, because these shoe types must be pasted, running shoes and Outdoor shoes will be a bit larger, so that the comfort will be better.

If you want to buy the right shoe type, it is best to go to the store to try on, so as to buy the most suitable shoes.

When you compare the size of the size, it is best to compare the size of Asia. The size of Asia is very standardized, so that it is easier to buy the appropriate number.

The size of Adidas shoes can be queried by the shoe label and shoe box stickers. Adidas shoes include US, UK, EUR, and CM units. Domestic reference EUR size is generally referred to.

Adidas shoe code comparison table

Adidas shoe clothing recommendation & gt; & gt;

FlipbeltHow about the Belt

FlipbeltThe Flybid sports Belt is a hidden Sports waist bag that is set around the waist. The reason why it is called a Belt is because it is360The Tube -shaped Belt design is directly wrapped around the waist, which is convenient and fast.

There are four storage Bags on the outside of the Belt with a large capacity and a night -light reflexarial logo, which can ensure the safety of runners training at night.

The most noticeable thing is,FlipbeltFeid has a tailor -made curved sports kettle.This kettle can be stored in the Belt, which is easy to carry, and the capacity is about330Milliliters, fit the waist of the human body, will not cause trouble during training.

In addition, the kettle kettle material uses a unique food -grade silicone soft mouth. The amount of water out of the water is controlled within a reasonable range to achieve one -handed operation without the need to unscrew the bottle cap. It solves the problem that many runners drink water during Running.The body material of the pot also uses non -toxic ingredientsBPAHigh densityHDPEMaterials, use it with confidence.

FlipbeltFeibi waist bandsXS-XLIn the five sizes, according to the size of the runner's waist circumference, there is no additional tightening device in the entire Belt, so that the traditional waist bag will bring uncomfortable friction when exercising.

Whether it is capacity, shaking, friction, comfort,FlipbeltThe flying Belt is close to the ultimate, but many runners are not only pursuing fast, but also handsome, and the face value of the pocket must also keep up with the match.

FlipbeltThe sports Belt not only has eight -colored to choose your choice, but also invisible and personal. You only need to pull your clothes down and cover the waist bag. No one can see that you wear a pocket, beautiful and generous, run the photo of the party's gospel.

FlipbeltThe flying Belt is divided into two types: classic and magic stickers. The above we evaluate the classic models. When wearing it, it is like wearing and taking off pants. The size is selected according to the waist table.

FlipbeltWhich model of the Belt is easier to use

FlipbeltBeltClassic

FlipbeltBeltZipper

FlipbeltBeltNight light