When you were a kid, you probably did sit-ups at school for an ab workout. But is the sit-up the best ab exercise? That’s actually a simple question. No way! There are far better ab exercises than a ...

YOU PROBABLY THINK you know how to do a plank. The ab training staple is relatively simple, after all—boiled down to the basics, all you need to do is get down on the ground and hold in place.

Staying still is hard work. Try holding a complex yoga pose or bracing through a plank, and tell me I'm wrong. You can really feel the burn without moving a muscle. Planks, which work muscles from ...

WHEN IT COMES to training your core muscles, most guys tend to value lots of movement. They'll rip through reps of situps, leg lifts, and twists; they might even cycle their legs back and forth like ...