Claire Wyckoff (pretty please be pronounced wackoff) uses the Nike+ run-tracking app to run in penis shapes, which she then posts to her Tumblr 'Running Drawing'. She doesn't JUST do penises though, just a LOT of penises (she's also done a unicorn, middle finger, Slimer from Ghostbusters, and a space invader). Clearly, Claire knows how to make cardio fun. Because if there was a giant penis waiting at the finish line every time I went for a run I'd be a lot more inclined to exercise. Wait, that came out wrong. I meant a giant vagina. No, that's not quite right either. I'll settle for a hotdog and a beer.
Keep going for more of Claire's exercise art.
Thanks to lilco, who agrees sex is one of the, if not THE, best exercise. Heck yeah! (What about masturbating?)