If a classic reverse crunch isn't quite challenging enough, do the move on a decline bench; or place a foam roller behind your knees and squeeze with the calves and thighs, then lift, to deepen ...

A decline situp bench positions your upper body at an angle ... Decline situps and decline crunches are both beneficial in building muscle and developing core strength, though they have slightly ...

If you want to challenge yourself with sit-ups or crunches, you can do those on a decline bench as well. Hook your knees over the top, lie down, and then try to raise your upper body against the ...