The amount of muscle you could gain in a month depends on your fitness level and sex. Find out averages in pounds here.

You'll need to dial in your training for the gains you want—and that starts by structuring your workouts right.

Let’s not forget your heart is a muscle you need to train. The best gym machine to do so? The treadmill. Walking, jogging, ...

Muscle-building usually involves heavy lifting —that is, more weight but fewer reps. “The general recommendation for rest is ...

But building muscle mass should be a core goal for overall health: Resistance training leads to greater bone density, ...