The Bottom Line: Ditch the sit-ups. These bodyweight exercises are smarter, tougher, and deliver more bang for your buck.

I’ve never enjoyed doing sit-ups. From doing them on the cold, hard gym floor at school to tediously tagging them onto the end of another workout, they’ve always felt uncomfortable on my lower back ...

10 min lower abs workout with no equipment required. For more workouts and programs, check out my app Today it feels like the ...