No. One. Said. Ever.
In the 25+ years teaching, never, ever, never have I heard someone say: "I super bummed that I just did that". Unless that person walked around and preened or something else that wastes time...yet, he/she said he/she went to the gym...and we all know a person or two like that. Jus sayin.
Moral of this post: get off your duff and just do it (whomever thought of the Just. Do. It for Nike was a goddess)! You won't regret it. Ever.