Muscle-on-chip systems are three-dimensional human muscle cell bundles cultured on collagen scaffolds. A Stanford University research team sent some of these systems to the International Space Station ...

Use these five dumbbell exercises to build your back and biceps muscles without a pull-up in sight. We know there are plenty of pull-up variations you can try to suit your current ability if you don't ...

After sitting most of the day at a desk, where I may or may not have the best posture, my chest and upper back are tight and achy. Maybe you can relate? Luckily, that's where upper-body stretches come ...

The upper back is an important enough area to train that many gym rats devote two whole days to it each week—this is what “pull day” really means. With strong lats and other upper back muscles, you ...

MOST THINGS WE do are forward-facing. We walk forward, reach forward, bend forward—of course, because we primarily see in front of us. That’s caused us to put an emphasis on the aesthetics of the ...

Building strength after 60 can feel like an uphill battle—but it doesn’t have to be. After four decades in the fitness ...

By working out your back muscles, you can not only avert back pain as you age but also improve your posture, overall strength ...

We live in a muscle-obsessed culture. If you train smart and hard, you don't need to spend every day in the gym, though. Build your upper body with chest presses, rows, lateral raises, bicep curls, ...

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 ...