Testosterone, also known as testosterone or testosterone, is secreted by the testes in men or the ovaries in women. The adrenal glands also secrete small amounts of testosterone, which has the effects of maintaining muscle strength and bone density, boosting energy and enhancing physical performance. Testosterone has certain effects on multiple organs and systems throughout the body, including: hematopoietic system, maintenance of calcium balance in the body, bone mineralization, lipid metabolism, glucose metabolism, and prostate growth. According to statistics, the amount of testosterone secreted by adult men is 20 times more than that secreted by adult women. Testosterone is also an important reason why boys are active, competitive, risk-taking, and aspire to be the strongest, bravest, and toughest men, and plays a vital role in the growth and development of boys. Although the level of testosterone affects male sexuality, especially for senior men, the effects of low testosterone levels on men can be more than that simple. 1, lack of energy The original mental energy of a person, become extremely tired or tired, may be the cause of testosterone levels decline. The level of testosterone affects a person’s energy, and adequate sleep is a good medicine to improve energy. 2, mood changes Low testosterone often makes people feel depressed, emotional ups and downs over a period of time, and can not be interested in things you once liked, and nothing seems to make you feel happy, which may be due to low testosterone levels at play. 3, muscle impact High testosterone levels help shape the muscles, when it becomes low, muscle and strength will also be correspondingly low, although the length of exercise does not change, but it does not achieve the desired effect. 4, sparse body hair lower testosterone levels, men’s hair, sweat hair, pubic hair, etc. will be correspondingly reduced, and even beard growth is slow, because the body internal lack of hormones to stimulate hair growth. 5, increased fat lower testosterone levels, not only affect the muscle growth of men training, to some extent will also increase fat. When you do not exercise muscle when you take in calories, the calories taken into the body will be converted into fat, and only the body secretes more testosterone to train the lost muscle back. 6, osteoporosis Lower testosterone levels may cause osteoporosis, leading to bone loss in the body, to have strong bones, adhere to exercise can help prevent osteoporosis. 7, affect the work of low testosterone levels will appear inattentive, depressed mood and other phenomena, this series of problems will cause people in the work is difficult to maintain a good state. As men age, testosterone secretion will decline, and intake is insufficient. Therefore, it is very important for men to supplement their testosterone in the right amount, and they need to test their serum testosterone levels regularly.