Sweat Stash

Brittany
I read about an interesting idea for weight loss motivation today. It's called a sweat stash. Every time you excersise you put a dollar in your jar, to save up for some sort of special reward. Want those new shoes better start running, want to go to that show, lift weights to get there, or want to go out for coffee with your girlfriends do some crunches to earn it. 
I thought it was an interesting idea. Do you think a sweat stash would be motivating?