Experts say testosterone is influenced by far more than genetics. Training style, sleep quality, nutrition, recovery, and ...

Add Yahoo as a preferred source to see more of our stories on Google. Before-and-after photo shows what happened when a 42-year-old male model went on testosterone therapy to gain muscle and energy A ...

Cortisol is bad. Testosterone makes you aggressive. Melatonin helps you sleep. Experts bust common hormone myths ...

For years, women were told to train differently because of their hormones. New research suggests the fundamentals of building ...

Adam Katz always dreamed of being larger than life. "I knew I wanted to be bigger than what was naturally possible for most guys," the Arizona-based online fitness coach, who began bodybuilding at 14, ...

Hormone therapies promise to increase muscle mass and sex drive, while bringing down depression. But because of advertising claims and ideological elements, this means that only a minority of men who ...

Federal officials may remove warnings on testosterone therapy drugs about heart and prostate risks, which could expand access ...