A PT explains how one of the simplest moves in the book not only strengthens your core, but could help you live a longer, healthier life too ...

• Sit-ups target your abdominal muscles, back muscles, and hip flexors, while crunches only target your abdominal muscles. • Neither sit-ups nor crunches alone burn abdominal fat. Overall activity and ...

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Sit on an incline bench with your chest forward, resting on the support. Grab dumbbells with a neutral grip, keeping your chest strong and allowing your arms to hang. Squeeze your back to pull the ...

If you are seated at work all day and your back is aching, while knee joint are throbbing, take out time for this brief workout routine.

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. Sprint interval ...