This funny-looking move is more than social media fluff. The leg day staple can save your spine.

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The longest bones in your body are your femurs, which are located within your upper legs. Connected to your femurs are your quadriceps, which are behind practically every movement that you do. This is ...

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’re a beginner, start with quad exercises that feature isometric holds (such as split squat isometric holds, isometric squats, and bear planks) to develop muscular endurance, stability, and ...

Bed exercises for seniors, trainer Michael Betts shares 5 moves to rebuild lower-body strength after 60, no gym needed.

Try chair exercises to improve standing endurance after 65, a low-impact routine designed by CPT Tyler Read.

Quadriceps are a group of four muscles located at the front of your thigh. Your quadriceps are some of the largest and strongest muscles in your body. Share on Pinterest peterdharwood/Getty Images ...