4. Hanging Leg Raises
Start by hanging from a pull-up bar with your feet off the floor. Contract your abs and tuck your hips underneath you. Raise your legs up towards the bar without swinging, using only your core strength. As your legs come up, relax your glutes and tense your abs pushing into your armpits and lift them as high as you can. Lower slowly to keep core muscles engaged for max benefits. Repeat. "Think about pulling the bar to your legs instead of lifting your legs to the bar," says. Neupert.