Think your core is strong? Research shows that holding a side plank for this long puts you in the top 10% of strength. Find ...

Build full-body strength at any age with these seven expert-recommended bodyweight exercises. No equipment needed—just your own body.

Ahead, a full breakdown of the plank — including ... No doubt, the standard, straight-arm high plank is a great exercise. “It really challenges your whole body,” says Wickham.