No amount of sleep is enough. Sex is much less interesting than it used to be. You wonder if you have depression. At work, you aren’t as sharp as you used to be, and struggle to focus throughout the ...

Testosterone is a hormone that plays a crucial role in men’s overall health and well-being. It is responsible for regulating muscle mass, bone density, sex drive, sperm production, and other important ...

Add Yahoo as a preferred source to see more of our stories on Google. Reeder explains that testosterone is far more involved than you would first think -- it plays are part in everything from muscle ...