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

Sit-ups target your abdominal muscles, back muscles, and hip flexors, while crunches only target your abdominal muscles. • ...

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 ...

This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. If you’re new to exercise, managing balance issues, or have limited mobility and looking for a gentle way to stay active, chair ...