katrin abs exercises

8 Sit Up Exercises to Build a Strong Core & Six Pack Abs

A strong core is essential for Crossfit and always comes first, but six pack abs are also fun.


It’s a bit like if the bicycle crunch got together with a standard sit-up. HOW TO DO IT: Lie flat on the floor with your hands behind your head. Exhale as you curl up, twisting your torso and bending your right knee so that you left elbow crosses over your right knee. Drop all the way back down to the start before repeating on the other side.

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