(CNN) -- Everyone knows physical activity offers a variety of perks, from stamina to strength to longevity.
Here are some benefits you might not know about:
Exercise can help you sleep better.
Studies have shown that the benefits are comparable to medication or behavioral therapy.
Regular exercise can mean fewer colds.
One study found that people who exercised regularly were half as likely to develop colds as those who didn't. And, research suggests that exercise boosts the immune system.
Working out is linked to better eye health.
Studies show that people who are physically active have a lower risk of cataracts and age-related macular degeneration.
Exercise may be good for your hearing.
Research has linked better fitness levels with better hearing ... And a survey of nearly 70-thousand nurses found that those who exercise regularly had a lower risk of hearing loss.
Finally, physical activity may help you out in the bathroom.
Moderate exercise may decrease chances of constipation and urinary incontinence.
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