Secret Service agents are essentially forced to learn new hobbies since the president is never without an escort. Wood says he didn’t have any experience riding horses when he accompanied Bill Clinton for rides during his two terms. “Fortunately, Clinton was not a master horseman like Reagan, so it was just a simple trail ride,” he says. But Clinton was a well-conditioned jogger, which forced agents into great shape just so they could keep up with him; “You’re doing your job while running for five miles.”