Choose activities that you enjoy and can do regularly. Fitting activity into a daily routine can be easy — such as taking a brisk 10 minute walk to and from the parking lot, bus stop, or subway station. Or, join an exercise class. Keep it interesting by trying something different on alternate days. Every little bit adds up and doing something is better than doing nothing.

The sense of balance typically worsens with age, according to Harvard Medical School’s HealthBeat newsletter. It can be further compromised by certain medical conditions and medications; uncorrected vision problems; or a lack of flexibility.

The American Heart Association (AHA) has teamed up with Olympic Gold Medalist Jennie Finch to promote the “Billion Calorie Count-UP,” a new multi-year, nationwide goal aimed at encouraging Americans to collectively burn one billion calories by the year 2020.

It's easy to do, delivers substantial health benefits and has the lowest dropout rate of any physical activity.