When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While ...

Experts have revealed how many sit-ups you should ideally manage at your age — and the numbers may surprise you.

Think you can stomach the FBI’s sit-up test? The FBI accepts applications from people between 23 and 37 — though veterans may qualify for an age waiver. Besides a background check, applicants must ...

Core muscles wrap around the midsection like a girdle, forming a connecting link between the upper and lower body. They support, stabilize, and help move your spine, trunk, and pelvis, and most body ...