Getting fit doesn't just do a body good. It's great for your eye health, too. Vigorous exercise, such as running, can protect your eyes from the two leading eye problems that occur over time: cataracts and macular degeneration. Not a runner? Any workout that pumps up your cardio fitness, such as biking, roller skating, swimming, or lifting weights, can protect your eyesight by reducing inflammation in your body that can negatively impact your eyes. If it's been awhile since you've exercised, begin slowly to build stamina.