“Hamstrings provide strength and power when accelerating or running uphill,” Alison Staples, coach at &Running in Howard County, Maryland, tells Runner’s World. “The hamstrings cross and act upon two ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Nordic curls are a bit of a gymgoer’s party trick. As you lower the backside of your body backwards ...

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. For strong, powerful ...

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Unlock greater mobility and Improve Hamstring Flexibility with this Runner's Lunge Exercise – perfect for anyone beginning their yoga journey or getting back into movement over 40. In this quick and ...