What I always see in ads is someone or a couple cruising along a bike path, really slow, just kind of coasting and lollygagging. Usually it's supposed to denote Good Health after taking some drug or supplement. But geez they're riding even slower than I did when I first started out! Like 4 mph. Guess it's easier on the film crew not to have to follow someone really hammering. Probably takes them all day to set up the shot as it is. But I always reflexively think, geez get a move on, get your circulation going!