Fitness has always been the pursuit of many men, but some studies have pointed out that men may sacrifice their fertility while maintaining health. Generally speaking, moderate exercise is good for the body, but in some cases, it may damage the fertility of men.
1. Overload exercise. After a long time of high-intensity exercise, men will accelerate blood circulation, resulting in excessive increase in testicular temperature (generally speaking, the appropriate temperature for testicular spermatogenesis is about 35 ℃), thus reducing spermatogenesis function; The function of pituitary gonadal axis in hypothalamic depression is inhibited, thus reducing the content of FSH and LH. Secreted, and these two hormones are the key hormones to promote sperm production; Disturb the cardiovascular blood supply balance, that is, significantly increase the blood oxygen demand of muscles, reduce the blood supply of brain, kidney and other organs, and make people in a state of hypoxia. Thus hindering spermatogenesis.
2. Take more male hormones. Because testosterone can help muscle growth, maintain hematopoietic function and increase bone density, many men will supplement some anabolic steroids (male hormones) at the same time. However, if you take too many of these drugs, you will reduce the amount of testosterone produced by yourself, and the local testosterone concentration in the testis will also decrease, which will affect the sperm function.
Therefore, Zhu Xinxuan put forward the following suggestions for men's fitness:
1. Combination of work and leisure. Both fitness and daily exercise should pay attention to the combination of work and leisure, and give the body enough time to recover. If you do high-intensity exercise, two to four times a week, you can't do it without interruption every day.
2. Wear loose and comfortable clothes. During exercise, loose, breathable and sweat-absorbing clothes (including underwear) that are conducive to heat dissipation and blood circulation should be selected to maintain a "cool" environment for normal sperm development and survival.
3. Moderate intensity exercise can improve sperm quality. Yamaguchi University of Japan divided 215 men into three groups and carried out different levels of exercise (high intensity, medium intensity and mild intensity). The results showed that the sperm vitality of men in the medium intensity exercise group was the highest. It is generally believed that 50% to 70% of the maximum heart rate (220 minus the age of last year) is of moderate intensity.