Top Definition
a personal training studio in new york city. It's located in Chelsea, Manhattan and was featured in Vogue Magazine and on the DailyCandy. Besides personal training, they also hold healthy cooking workshops and provide their clients with meal plans to help them reach their goals.
Dude 1: Whoa! Dude, your abs are rock hard! What have you been doing??

Dude 2: I've been working out at Thirdpower. Where've you been that you haven't heard of them???
by FitnessGurl_03 June 17, 2008
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