Ah, hamstrings: the middle child of muscle groups. While they might not be the sexiest parts of our bodies, strong hamstrings play a vital role in our overall strength and stability. To learn more ...

The hamstrings are a rare and unique lower-body muscle group that actually acts at two joints. Flexing your hamstrings will bend your knee, much as you do during leg curls. Your hamstrings also act on ...

The semitendinosus is one of the four muscles in the hamstring muscle group. The others are the semimembranosus and the biceps femoris. The semitendinosus is the longest of these muscles, and it runs ...

The hamstring muscle group is a common location for injuries among runners. Eccentric exercises are a key strategy to prevent and recover from hamstring issues. Since the hamstring muscle crosses both ...

Your glutes and hamstrings aren’t just for looks—they’re the powerhouse behind walking, running, lifting, and protecting your back. Weakness or imbalance here can lead to tightness, pain, and higher ...

Many great exercises work the hamstrings. But if you spend time training one muscle group, you want to do only the best exercises, right? A recent study conducted at the University of Memphis looked ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Do you ever wake up with tight, stiff legs and wonder why? Or maybe, during yoga class, you find it ...

Oluseun Olufade, MD, is an Orthopedic Surgeon and Assistant Professor of Orthopedics at the Emory School of Medicine. Hamstring curls and Romanian deadlifts both strengthen the hamstrings, but they ...

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 ...

Here's why your obsession with stretching is actually keeping you tight and how to finally find relief.