Testosterone is one of the most important hormones responsible for building muscle. There are a number of reasons for having reduced testosterone levels in the body and these include poor diet, high stress, age, and overtraining. Having a low testosterone level can lead to the loss of muscle mass, the inability to build muscle, decreased sporting performance, poor recovery, lethargy, aswell as a reduction in sexual desire. Testosterone Boosters will help to raise your testosterone, gain muscle, enhance your mood, support a healthy libido, and more!