Working out regularly has a powerful impact on your physical and mental health, including heart function, mood, and body composition. But when it comes to testosterone—the key hormone linked to muscle ...

There are endless ways to train. Some dudes grind themselves into the ground in HIIT classes. Others chase their next WOD at the CrossFit box. And plenty of guys spend years chasing bigger numbers in ...

Learn how sleep affects testosterone, what the research shows, how much sleep lifters need, and when low testosterone ...

Testosterone slowly declines with age. The good news is that urologists know what men can do to keep it from getting too low.