http://www.newscientist.com/article.ns?id=mg18825196.000&feedId=online-news_rss20
(I doubt that worked - can someone on IE make it a hyperlink until ST supports Mozilla?)
Imagine the possibilities:
Swim clothes that vibrate with your pace, or apply pressure where your form is off (not rolling hips, elbow drop).
Bike/run shorts that massage your legs while you ride…