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 ...

Chair core exercises after 60: Trainer-approved moves to build core strength without floor planks, crunches, or back strain.

Certified trainer shares an 8-minute seated routine that firms sagging thighs after 55. Four moves, no equipment, daily results.

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. Ready for leg day?

If you want to pack size, strength, and muscle onto your hamstrings, glutes, and quads, then start integrating these ...