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 ...

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 ...

The hamstrings are the large muscles located at the back of your legs, behind the thighs. They are recruited in almost all of our daily activities from walking to bending down to standing up from the ...

You may think having flexible hamstrings is a badge of honor for outdoor athletes. And while you’re not exactly wrong, not everyone needs to have Cirque du Soleil-level stretching abilities to succeed ...

Get the blood flowing and muscles firing with these six warm-up stretches for runners to prevent injury and feel your best.