McGill curl-ups, or modified curl-ups, are much friendlier for your lower back than moves like sit-ups, as your lower back is ...

You don’t need to get on the floor to challenge your core. A personal trainer’s seated workout is proving that effective ab ...

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 ...

A top trainer shares 5 chair exercises for thighs after 60 that rebuild leg muscle and protect your independence.

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. It’s kind of strange, ...

The modified McGill curl-up is a Pilates go-to for ultimate core control and strength.