Remember that episode of "Friends" where Phoebe goes for a run with Rachel in the park? You know, when she flails around unabashedly and totally mortifies her pal?

Yeah, well you're going to look even crazier if you dare to do this workout in public.

Joanna Rohrback created "Prancercise" back in the 1980s, and she's using the power of the Interwebs to nudge it into making a comeback. And, thanks to the wonders of viral videos, she's actually succeeding -- even if most of us are sending it around for a good laugh rather than a butt-kicker of a workout.

Check it out and tell us: Will you "stop talkin' and do some walkin'"?