People who cycle to work are the happiest kinds of commuters—that’s been proven. Now scientists have found that cycling also keeps you young. New researchers discovered that cyclists—the more extreme ones that ride about 100 km in 6.5 hours—actually stay younger. The exercise is high cardio, great for your body, and low impact so puts minimal stress on your joints. While not everyone rides that far for so long, the benefits of cycling can be reaped by anyone.