Hard figures on how many men are affected are hard to come by: testosterone is a bit of a hot topic right now, with loads of brands offering injections and pills to boost your levels, all of which means there are various statistics flying around the internet, suggesting anywhere from 12 to 40 percent of men are struggling. Both men and women require balanced testosterone levels for good physical and emotional health, as too little or too much can cause issues such as fatigue, low libido, mood fluctuations, or changes in body composition.” Balanced testosterone levels contribute to better motivation, stronger muscles, and enhanced overall stamina so it’s in your interest to keep your levels high.