A 30-day, no-floorwork standing abs plan that boosts fat burn, posture, and core strength—anywhere, no gym required.

You can say goodbye to sit-ups with this bodyweight exercise, which strengthens your core and hips without hurting your spine ...

Dwayne "The Rock" Johnson uses eccentric exercise to build muscle, his strength coach says. It involves lengthening muscles under tension, such as when you lower a weight (called a negative rep).

Sculpt visible abs with just two focused workouts a week. This trainer-approved routine builds strength, definition, and core stability fast.

There’s some unofficial rule out there in the comic-book movie realm that says this: part of the game of playing a superhero (or supervillain or antihero) means that Instagramming one’s “jacked” ...