1. Set goals

Start with simple goals and then progress to longer range goals. Remember to make your goals realistic and achievable. It's easy to get frustrated and give up if your goals are too ambitious.

For example, if you haven't exercised in a while, a short-term goal might be to walk 10 minutes a day five days a week. Even short amounts of exercise can have benefits. An intermediate goal might be to walk 30 minutes five days a week. A long-term goal might be to complete a 5K walk.

For most healthy adults, the Department of Health and Human Services recommends at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous aerobic activity a week, or a combination of moderate and vigorous activity. Greater amounts of exercise will provide even greater benefit. Aim to incorporate strength training exercises of all the major muscle groups into your fitness routine at least two times a week.