The Best Posture Is Your Next Posture

There is no single perfect way to sit or stand — the real problem is staying in any one position for hours. Even a correct posture becomes harmful when it never changes; your spine and muscles are built for variation, not for holding still.

The best posture is simply your next posture. Stand up every twenty or thirty minutes, shift your weight, roll your shoulders, or stretch your neck. Small, frequent changes protect your back more than any single ideal position ever could.