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

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 ...

Strengthening your back helps align your spine and reduce slouching. Try these eight exercises for a stronger back.