How much is enough?

For most healthy adults, the U.S. Department of Health and Human Services exercise guidelines recommend at least 150 minutes of moderate aerobic activity a week. Or get at least 75 minutes of vigorous aerobic activity a week. You also can get an equal mix of the two types.

Aim to exercise most days of the week. But even small amounts of physical activity can be helpful. Being active for short periods of time, such as 10 to 15 minutes at a time, throughout the day can add up and have health benefits.

Regular exercise may improve depression or anxiety symptoms enough to make a big difference. That big difference can help kick-start further improvements. The mental health benefits of exercise and physical activity may last only if you stick with them over the long term. That's another good reason to find activities that you enjoy.