Brush your teeth twice a day and floss every day.

Don't smoke.

Limit your alcohol. Keep it to one drink a day.

If you have medication, take it exactly how your doctor prescribed it.

Improve your sleep. Aim for 8 hours. If you have trouble getting shut-eye, talk to your doctor.

Use sunscreen and stay out of the sun from 10 a.m. to 3 p.m.

The more active you are, the better, Meng says. Exercise boosts your heart health, builds muscle and bone strength, and wards off health problems.

Aim for 2 and a half hours of moderate activity, like brisk walking or dancing, every week. If you're OK with vigorous exercise, stick to 1 hour and 15 minutes a week of things