When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While sit-ups have long been a go-to for strengthening the core, they're not always ...

These 5 chair exercises target lower belly fat after 50. Easier on joints than sit-ups and more effective. Get started today.

Find out how many sit-ups after 55 signal a strong, healthy core and use this 60-second test to track your strength over time.

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 ...