The thermal conductivity of water is 24 times greater than that of air, and the resistance of water movement is 12 times greater than that of air. Therefore, soaking in water without exercise will make the body pay a lot of heat. When swimming, people's metabolism is very fast, and they can consume 1 100 kilojoules of heat in 30 minutes. You can't swim. If you soak in water for an hour, it is estimated that you can reach 1 100 kilojoules of heat.

Then, give a group of meat calorie values.

Pork 829.5 kilojoules/two. Chicken 350 kilojoules/two. Beef 262 kilojoules/two. Mutton 23 1 kilojoule/two

The calorie consumed by a person sitting quietly for a day is about 1200- 1500 kilojoules. Jogging 1 hour consumes 2500~3000 kilojoules. So swimming for an hour and jogging for an hour consume almost the same calories as sitting for two days, but please note that if you eat four taels of pork every day, you will supplement the calories of swimming for an hour. If you eat too much, you will get fat.

But swimming has other benefits.

1, full-body exercise. 2. It has no effect on the knee. 3. Massage the whole body. 4. Stretch the tendons of the body. Plasticity 5, better for cervical vertebrae. 6. Cardiopulmonary function has also improved.

Disadvantages of swimming.

1, water for a long time, easy to rheumatism into the human body. The water in the swimming pool contains bacteria and chlorine. After a long time, it will stimulate the nasal membrane, hair and skin. It is not recommended to stay in the swimming pool for two hours (unless the water quality of the swimming pool is particularly good). Just make full use of an hour's exercise. If you feel unwell, it is recommended to extend the interval between swimming. Such as once every three days.

So swimming and proper diet can lose weight.