In the video above, Men’s Health Fitness Director BJ Gaddour, C.S.C.S., demonstrates the eccentric single-leg sliding leg curl ... also go with a sock on a wooden floor, or a paper plate ...

C.S.C.S. Between reps of the curl and press, you’ll do split switches—a variation on the split squat that requires you to switch leg positions in midair. Explosive exercises like that require ...