Four to six minutes per exercise is all it takes to pile up hard, close-to-failure reps and serious time under tension ...

This is not truly concentric only because you still need to use your muscles to decelerate. However, we are certainly heavily ...

You can build muscle a hundred different ways—switching up your reps, going heavier or lighter, or even sticking to bodyweight moves. But if you’ve been at it for years and you’re bored or stuck on a ...