The hormone that was named, then first synthesized, in the 1930’s has been a topic of conversation and controversy ever since. Testosterone is also a commonly used anabolic steroid, meaning forms of it can be illegal to obtain in certain countries without a prescription. However, the benefits advertised make it sound like the fountain of youth. Promising to increase endurance, increase muscle mass and strength, improve brain function and more. If you are considering using a testosterone supplement, be sure to do your research to better understand how it may affect you. Also, there are a few ways you can maintain, or increase, your testosterone levels naturally. A good starting point to learn more about this critical hormone is the article linked below by bodybuilding.com.