Stretching is an underrated but important part of daily physical activity. Among its many health benefits, it promotes flexibility and helps your joints maintain a healthy range of motion—and in doing so, also lowers the chances of joint and muscle strain.

How often should you stretch? How long should you hold a stretch? And how many times should you do each stretch?

A panel of experts convened by the American College of Sports Medicine (ACSM) reviewed a wide range of studies to help answer these questions. Based on the evidence, the panel agreed that:

• Healthy adults should do flexibility exercises (stretches, yoga, or tai chi) for all major muscle-tendon groups—neck, shoulders, chest, trunk, lower back, hips, legs, and ankles—at least two to three times a week.
• For optimal results, you should spend a total of 60 seconds on each stretching exercise. So, if you can hold a particular stretch for 15 seconds, repeating it three more times would be ideal. If you can hold the stretch for 20 seconds, two more repetitions would do the trick.

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