Build strong core muscles without weights, just using these three crunch variations from a functional training coach.

Improving strength in your abdominals is a great place to start – and the reverse crunch is one exercise that gives you plenty of bang for your buck. Reverse crunches work both your rectus ...

Raise your hand if you find strength workouts boring. Yeah, we get it—doing reps upon reps of regular old crunches, planks, squats, and lunges isn't necessarily the most interesting thing in the ...