Some teenagers like to engage in outdoor sports in the sun, which can really sweat and lose weight, but it is harmful to their health. Engaging in a large amount of exercise at high temperature can easily lead to excessive sweating, dehydration, heatstroke and other symptoms, which can seriously make people dizzy. Moreover, the sunshine is strongest in the summer morning 1 1 to 4 pm, which will burn people's skin.

Myth 2: Take a bath immediately after fitness.

Just after fitness, the human body urgently needs to release heat in the body, and the skin capillaries expand accordingly. If you take a cold bath immediately, your skin will be stimulated by supercooling, and the capillaries will suddenly contract, which is not conducive to the body's heat dissipation. Excessive stimulation of cold and heat will also make the expanded pores close urgently, and the human immunity will decline. At this time, bacteria are most likely to invade.

Myth 3: Drink plenty of water after exercise.

Many people know to replenish water immediately after sweating a lot, but it is easy and inappropriate to replenish too much water. Because, after a lot of exercise, all organs and systems of the human body need to rest, and at this time, a lot of hydration will add a heavy burden to digestion, blood circulation and other systems, especially the heart.

At the same time, after sweating a lot, supplementing mineral water can make up for the trace elements lost with sweat. If you drink a lot of pure water, it will only aggravate the loss of human minerals and easily cause cramps, spasms and other symptoms.

Myth 4: Frozen drinks help to cool down and relieve the summer heat.

After strenuous exercise, a large amount of blood flows to the moving muscles and body surface, while the digestive organs are in a state of relative anemia. Drinking frozen drinks at this time will bring strong stimulation to the stomach and easily induce diseases such as anorexia and acute gastritis.

In addition, experts suggest that the best sports in summer are swimming and traveling. The former avoids the hot weather environment, and the latter can choose to rest and recuperate in the summer resort.