Being an athlete is another. If you're a true athlete, you'll be able to pass these tests shared by trainer Matt Casturo.

Goal: Aim to progress with pristine form. Quality over quantity. Holding a wobbly three minutes means less than a rock-solid ...

If you're doing the plank properly, you'll be struggling to hold the position much sooner than you'd expect. This could mean ...

Forget long plank holds. Learn why proper form and short bursts deliver better core strength and save time during your ...