Hormones are very vital to the human body, low levels of them can result in weak bones, poor muscle tone, low sex drive, and other health issues. But the normal levels of testosterone can make you less susceptible to degenerative diseases like diabetes, heart disease, and osteoporosis.Since testosterone is one of the body's hormones, men should ensure that they have the right levels of testosterone in their body at all times.If you have low testosterone levels or you want to improve your testosterone levels, this is the book you need to read.