When people think about exercise or weight training, they tend to focus on concentric exercises: those powerful movements that shorten muscles, like curling a dumbbell or powering upward in a squat.

Time under contraction is not directly measured in a typical weight training program. Most people really don't even think about the number of seconds a given muscle is forced to work. Indirectly, ...

Eccentric exercise may help build muscle and strength with less effort than traditional workouts. Learn the benefits, risks, ...