When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While ...
When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images Bored of planks and crunches? Why not try mixing things up with a killer ab ...
What are sit-ups, and why are they a high-risk exercise? An abdominal endurance training exercise, sit-ups help strengthen, tighten and tone the abdominal muscles. It is often done by gym-goers who ...