If youve ever been in a big-box gym before, youve seen plenty of guys doing classic leg exercises like squats and lunges and deadlifts. But theres a good chance youve also seen a host of leg-training ...

What Are Eccentric and Concentric Contractions? Eccentric contractions occur when a muscle lengthens under load, such as lowering a dumbbell during a biceps curl. Concentric contractions happen when ...

If you tend to breeze through the "easy" part of an exercise – like lowering into a squat or letting your dumbbells drop after a curl – you might be missing a major opportunity to build strength. That ...