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 ...

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 ...

Natalia Perez-Segnini is a NASM-certified personal trainer, a yoga instructor, a breathwork practitioner and a trauma-informed specialist. As a head coach at Tone House—a premier athletic-based ...

Adaptations in the hamstring muscle-tendon unit following a 9-week eccentric training program. The results demonstrate that while training allows muscle fibers to operate over significantly longer ...

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 ...

Jakob Roze, CSCS, is a health writer and high-end personal trainer. He is the founder and CEO of RozeFit, a high-end concierge personal training practice and online blog. Squats train all the major ...

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