STAND IN LINE AT THE BANK
Yep, you read that right. When you’re getting your walking-around money for the week, ask the teller for brand-new bills. People spend dirty-looking money faster than crisp cash, just to separate themselves from the grime, according to a study in the Journal of Consumer Research. Sure, it’ll take you an extra minute to go to a human instead of a machine, but you’ll be richer in the long run.