Sometimes, when we’ve had a late night or are just feeling a bit sluggish, we need a little pick-me-up to get us through the day. And where do you go for such a thing? Well, Dunkin’ Donuts of course. As their slogan goes, America runs on Dunkin’, so that seems like the best choice when you’re feeling a bit lethargic. And if you really needed convincing to go to Dunkin’ Donuts, they want to give you a coupon for a free medium beverage of your choice. All you have to do is sign up for Dunkin’ Perks. It really is all perks too, if you really want to know. It gets you the aforementioned coupon, another free drink coupon on your birthday, all the latest Dunkin’ news, and plenty of other in-store and online offers. There’s really nothing to lose here, unless you don’t register, in which case you miss out on a free drink. But why would you want to do that?