According to a study by the American National Academy of Sciences, the happiest years of people’s lives are often their 70s and 80s.

Those years will be even better if you’re in good physical shape. Here are the three most important things seniors can do to live well

1. Diet

For the most part, dietary recommendations are the same for youth and seniors alike—eat a balance of whole grains, lean meats, and lots of fruit and veggies. Seniors are advised to be extra vigilant in not eating too much sodium or sugar, due to the increased risk of diabetes and heart disease.

2. Exercise

Experts typically recommend seniors do low impact exercises such as swimming and walking. Those with limited mobility might find it helpful to use a rollator, walker or cane to get around. An active body will not only make you feel better; it’ll keep your mind sharp too.

3. Checkups

As one ages, checkups and health screenings become more important. But it’s not uncommon for seniors to ignore new symptoms, simply blaming them on old age. While this may in part be true, that doesn’t mean the symptoms can’t be improved or that they don’t need medical attention. Talk to your doctor about how often you should go for a checkup.