This no-equipment movement is helping people rebuild upper-back strength, improve posture, and feel stronger at home—fast.

It’s easy to almost forget we have muscles in our back. We can see and feel our biceps and our abs working, but if we ever get a sore lower back, we often worry that we’ve hurt our spine. In fact, ...

With so much focus on the upper body and core, it's easy to forget to tone your back muscles. After all, you want to look ...