Sit-ups and crunches both target your core muscles, but work differently. You can use both exercises to build strength, endurance, and control.

If your goal is a visibly stronger core, remember there’s no single method that guarantees a six-pack. Forget gimmicks and ...

If you've ever wondered (mid-crunch, most likely) exactly how many sit ups you should be doing every day to optimise your fitness, then you're in the right place - this is exactly the type of question ...