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 ...

Do you ever wake up with tight, stiff legs and wonder why? Or maybe, during yoga class, you find it difficult to touch your heels to the ground in downward-facing dog. Either way, you could probably ...

At first she thought she was feeling routine soreness, something that Donna Grubb-Hewlett was pretty sure she could muscle through. But when she heard a pop in the back of her leg during a February ...

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 ...

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 ...