My boyfriend was a varsity athlete in high school, but nearly 10 years later he doesn't have that "swimmer's physique" that he once had. He'd never go running with me or get a gym membership with me. Getting him to even do push-ups is a challenge! But, one day he borrowed my bike and rode it for over an hour. Then we bought him one of his own, and now he wants to go riding all the time. It's contagious and addicting!