After strenuous exercise, in order to keep the body temperature constant, blood vessels on the skin surface dilate, sweat pores expand and sweat increases, which is beneficial to heat dissipation? At this time, if you take a cold bath, the blood vessels will contract due to sudden stimulation, the blood circulation resistance will increase, and the body's resistance will decrease, so people will easily get sick? If you take a hot bath, the blood flow to the skin will continue to increase, and too much blood will flow into the muscles and skin, resulting in insufficient blood supply to the heart and brain, ranging from dizziness and collapse to shock, which is easy to induce other chronic diseases?

Myth 2. Fitness is not fun?

Some people think that fitness exercise is not fun in the face of cold fitness equipment? Experts suggest that you should exercise with friends or family, just like watching movies or eating together?

Myth 3. Eager for success?

Many people hope that short-term exercise can achieve amazing results? At present, the exercise standard recommended by experts is 3.5~4 hours per week, which can prevent weight gain? Want to lose weight, walk for 30 minutes every time, three times a week, so that you can lose weight 1 kg (0.45 kg) in about one month under the same diet? So, if you want to lose weight faster, you have to increase your exercise?

Myth 4. Crazy sports on weekends?

If you don't exercise at ordinary times, even if you exercise crazily for two days every weekend, you will never reach your goal. Every Monday is terrible? This "training" of eating a fat man in one bite will only lead to injury and fatigue?

Myth 5. As long as it is exercise, any form will do.

Choosing sports depends on physical health and physiological stage? People with osteoarthritis and degenerative changes in the knee joint are not suitable for mountain climbing? Climb the stairs? Squats and other activities? Patients with hypertensive heart disease are not suitable for too strenuous exercise? When exercising, you must do what you can according to your physical condition? Especially for patients with chronic diseases, it is best to consult a doctor?