Natural levels of testosterone are greatest in the morning and lowest at night. In addition to diseases and drugs, overexertion, bad diet, and medications can also cause the body to produce less testosterone. Supplements known as testosterone boosters or enhancers are used by people to raise their body's testosterone levels. Typically, these products contain ashwagandha, maca, zinc, fenugreek, and maca from traditional medicine. http://insightsmarketer.weebly.com/digital-endowments/unveiling-the-potential-of-testosterone-boosters-enhancing-vitality-and-well-being