Testosterone hormone is produced by testes and is an important hormone for men, its main effects are as follows: 1. Testosterone hormone can maintain male sexual function, promote penile erection and maintain male fertility. 2. Testosterone hormone can enhance male bone strength and increase muscle content. 3. Testosterone hormone can maintain male secondary sexual characteristics, such as throat knots and beard. 4. Testosterone hormone can promote the normal development of the male reproductive system, including the testicles, penis, and prostate area. 5. Testosterone hormone can make men have high energy and abundant physical strength. 6. Testosterone hormone can reduce the occurrence of atherosclerosis in men, effectively reduce blood lipids, and promote protein synthesis.