When alpine skier Mikaela Shiffrin casually dropped a video showing what she jokingly called her “back abs,” the internet predictably lost its collective mind. The clip shows etched lines and ...

Mikaela Shiffrin has one more shot at an Olympic medal at the Milano Cortina Games on Wednesday, February 18, in the Women’s Slalom as she hopes to break a streak of eight consecutive races without ...

A broad, well-defined back is a cornerstone of any well-rounded physique. But that’s not the only reason to pump up your posterior—it’s also a critical way of improving posture, reducing back pain, ...

You don’t need a gym to build muscle. These unique bicep and back workouts use minimal or no equipment to help you grow strength and size at home. Anthony J. Yeung, C.S.C.S. View post: Using These ...

Leoni Jesner is a fitness, health, and lifestyle writer who has contributed to Byrdie and LIVESTRONG.com, among other publications. She is also a personal trainer, mat Pilates instructor, and ...

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. The upper back is an ...

Sitting, standing, and moving between the two seem almost involuntary, but your body's muscles are working hard to make these motions happen. Your skeleton has over 600 muscles attached, and many of ...