You can build muscle after 70 by working out once a week—a physical therapist explains how

Senior man holding dumbbells at home.

Strength training at any age is important, but it’s essential after 70.

“As we age, we often face structural changes known as sarcopenia and osteopenia—the progressive loss of muscle mass and bone density,” says Dr Jamie Bovay, founder and lead physical therapist at KinetikChain Denver.