Testosterone is a hormone from the androgen group and is primarily secreted in the testes of males and the ovaries of females, although small amounts are also secreted by the adrenal glands. This hormone is important to physique competitors, Average Joes, men and women alike. It has a wide range of benefits, including: increased muscle mass, increased strength, mental and physical energy, increased bone density and strength, increased libido as well as overall well being and health. Testosterone increases the muscles' protein synthesis, and as a result, muscle fibers become larger and repair faster. This means you can train harder and longer. This is such an important hormone that Doctors prescribe it to patients as both a cure and as a preventative measure. As you can see, this all important hormone is very beneficial to both sexes, no matter your fitness level. As we age, our testosterone levels decline, naturally. In men, the peak is about age 18, and after that it’s a gradual decrease year after year. For you guys out there, do you remember how you felt when you were 18??? From what I hear, probably indestructible and full of energy! Although your testosterone levels will never be that high again, there are some things that both men and women, who are serious about their bodies, can do. For example, 6-9 hours of uninterrupted sleep can increase testosterone levels. A diet with enough calories coming from animal proteins and healthy fats and cruciferous veggies can increase test levels. Also, avoiding alcoholic beverages and consuming a protein and carbohydrate drink post workout can help as well.