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 results. Plenty of other exercises take you off the mat and onto your feet ...

Standing crunches can be a very effective alternative to sit-ups and the classic crunch, but to get the most out of it, focus ...

Training my abs is always tough, so I figured why not push it even further? I swapped out the usual sit-ups and Russian twists for a four-move dumbbell workout to really spice things up. I've been ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Sprint interval ...