Because the fat burning did not reach the peak in the first 30 minutes of exercise, it is more effective to start burning fat at high speed after 30 minutes, that is, to train for another 30 to 40 minutes, so swimming takes about 60 to 70 minutes.

6 swimming weight loss precautions 1, replenish energy in advance. Drinking sugary drinks before swimming can improve the blood sugar level, ensure that hypoglycemia will not occur during swimming, and ensure that you will not be particularly hungry after swimming.

2. Control diet, try to control appetite, eat more vegetables, milk and starchy foods, and reduce the intake of high-calorie foods.

3. Warm up before swimming. Do warm-up activities before going into the water to exercise muscles and joints to prevent strain and cramps.

4. Don't swim on an empty stomach. Swimming is a high-energy exercise, which consumes a lot of calories. If you are on an empty stomach, hypoglycemia is likely to occur, leading to dizziness, muscle spasm and other problems.

5. Sick patients should not swim. Patients with cardiovascular and cerebrovascular diseases and infectious diseases had better not swim. First, it is easy to aggravate the condition, and second, infectious diseases are easy to spread to others.

6. Don't swim in unknown waters. It is not suitable for swimming in places with unclear water quality and water environment, and the risk factor is extremely high.