For example, doing multiple sets of a chest exercise paired with sets of a back exercise shuttles blood back and forth ...

And this short, high-intensity workout by certified fitness trainer Anna Engelschall, who runs the YouTube channel Growing ...

While sit-ups and crunches might be seen as the cornerstone of ab and core workouts, they’re far from the only moves that get ...

Hang from elbow straps or hold yourself up on parallel bars. Cinching in through your abs, draw your knees up toward chest, ...