A hot day is coming. How are you going to spend a quiet summer? To tell the truth, 80% people think swimming is the best exercise in summer, which is pleasant for summer. There is also a topic that young MM loves to lose weight, which can be solved in swimming events. Some experts have analyzed that the thermal conductivity of water is 26 times greater than that of air, and the heat dissipation of water at the same temperature is more than 20 times faster than that of air. This will effectively consume human body heat. Sports physiologists' tests show that swimming in water consumes 100 calories, which is equivalent to running 400 meters on land, riding a bike 1000 meters, or skating 1500 meters, which is why you feel hungry soon after swimming. Water pressure prevents disease. When swimming, the human body is in a horizontal state, which is very beneficial for the blood of lower limbs and systemic veins to return to the atrium. The pressure of water on the chest cavity promotes breathing and increases vital capacity. The cold stimulation of water temperature on skin makes blood vessels contract and expand rapidly. There is a swimming hospital in Japan, which specializes in treating people with kidney disease, obesity, asthma, allergies and other endocrine diseases by training, helping them to exercise and recover their health. Swimming is a whole-body exercise, because there is buoyancy in the water, so there is no need to support the body's extra physical strength when moving on the ground. So it is very beneficial to treat chronic diseases. When swimming, the chest and abdomen are under the pressure of water, and the role of respiratory muscles is strengthened. It can also treat tracheitis and emphysema. Beginners should learn butterfly, backstroke, breaststroke and freestyle. Beginners usually start with freestyle or breaststroke. The following is the action essentials. Freestyle body posture: the body is as straight as possible, and the leg movements just come out of the water to get water. Arm movements: entering the water, stretching, holding the water and paddling inward, paddling upward and moving the arm. Kick: keep your legs together, don't bend your knees too much, and kick your legs down. Breathing: Turn your head to your shoulders to breathe, breathe lightly and breathe deeply. Rhythm: Kick 6 times, with each arm paddling 1 time. Body posture of backstroke: the ears are just in the water, the hips are just in the water, the feet are just out of the water, and the head remains stable. Arm movements: entering the water, holding the water, paddling, paddling back, paddling for the second time, resetting and moving the arm. Kick: Put your legs together and kick alternately up and down. Knees can be bent, but they can't be out of the water. Breathing: Exhale when one arm moves, and breathe when the other arm moves. Rhythm: 1 6 kicks. Body posture of butterfly stroke: the shoulders must be kept on a horizontal plane, the hips are close to the water, the head enters the water before the arms, and the head is raised lower. Arm movements: entering the water, paddling outwards and holding the water, paddling downwards, paddling inwards, paddling upwards and moving the arm. Kick: Don't bend your knees at first, and put your legs together. As soon as the heel comes out, kick the water down. Breathing: Start breathing when you stroke upward. Rhythm: 1 2 kicks. Body posture of breaststroke: Keep the head and hips as high as possible, and the body is based on the chest. Arm movements: paddling outward, holding water, paddling downward and stretching. Kick: Stretch, contract, kick, kick down and kick in. Breathe: Breathe when the arm is vigorously paddling inward. Rhythm: Make sure the kick is done with your arms extended. № Ways to lose weight by swimming and body shaping/2005/7-3/23-07-3294593.html (2005-7-3 23: 07: 33) № partial weight loss threw away the waist and abdomen "swimming ring"/2005/7-1. 7-17/10-3659996.html (2005-7-1710: 00: 36) The Devil's Dictionary of Swimming to Lose Weight (Figure 22-1) 0622-25-5322546.html (2005-8-19 22: 25: 53) № Weight loss method 3 strokes to reduce waist swimming ring (figure)/2005/8-231/kloc-

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