The crunch is a classic ab exercise. It’s also pretty straightforward: Lie on your back with your knees bent and feet flat on the floor, contract your abdominals, and lift your shoulders, neck, and ...
Imagine this: You’ve fallen flat in a field, an entire football team is barreling toward you — and no one’s around to lend a hand. Could you get back on your feet? If the answer is no, it’s time to ...