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Learning how to do ab roll ups exercise correctly will allow you to build your abs and core strength without hurting your back.
The secret to this ab exercise is to perform it slowly. When you do ab roll ups slowly you really engage your abdominal muscles and that gives you faster results.
It's also important to perform a full range of motion by rising until your torso is perpendicular to the floor and then slowly returning to starting position.
The ab roll ups exercise is ideal for beginners and advanced trainees as well.
If you're struggling to perform the exercise, bend your knees. That should make it much easier to perform.
Use the tips in this video to learn how to do ab roll ups exercise properly.