Normal exercise needs energy to maintain, and we mainly get energy from food. If we run on an empty stomach, the energy to maintain exercise can only be achieved by burning fat. In addition, fasting exercise leads to a significant increase in free fatty acids in human blood. If there are too many free fatty acids, there will be "poisons" that damage the myocardium. This "poison" often leads to abnormal heart rhythm and even sudden death.

Exercise after eating too much will do great harm to the stomach. Drink a glass of milk before exercise, with some eggs, coarse grains and cakes.

Skipping rope is one of the best exercises to lose weight. The test shows that jumping 10 minutes and jumping 140 times per minute is equivalent to jogging for half an hour. Skipping rope can not only help you lose weight, but also make your muscles well-proportioned and strong, and at the same time, your respiratory system, heart and cardiovascular system will be fully exercised. This slimming method is simple, interesting and unaffected by the climate, and it is a sport suitable for men, women and children. Only one rope is needed to achieve the purpose of slimming, and it is especially suitable for women.