No, it's not. But not for the reasons you think.
By working out to burn off junk, you're setting up an unhealthy binge/purge cycle that can lead to eating disorders and other disordered eating patterns. There's even a name for it. It's called "exercise bulimia". www.sparkpeople.com/resource/fitness_artic
"People who suffer from exercise bulimia often binge on food and then exercise obsessively to make up for it. Exercise becomes a way to control calories, justify eating, and punish oneself for eating too much or eating the "wrong" things."
If you want to eat a "cheat meal" then work that into your overall week's calories; eating just 100 calories less over the course of the week would give you plenty of wiggle room for that pizza.
It's never a good idea to "punish" yourself through exercise, either; that sets up a negative association that working out is something you do to fix being "bad", or to try and undo harm, rather than something you do as a part of a healthy lifestyle.
I don't think it's ever okay to deliberately binge. 1,000 calories of pizza is a LOT of pizza. There's no way that's an enjoyable experience in the end. You're going to be bloated, overfull, and not at all comfortable. Binges happen; I get that; you can't "fix" them, though, you just have to pick up the pieces and move on.
You can't out-exercise a bad diet, and you shouldn't try. Make healthy choices; instead of 1,000 calories of pizza, eat a couple of slices, and enjoy a huge salad with it instead.
Edited by: DRAGONCHILDE at: 6/3/2013 (21:42)