Goodful·Posted on Jul 20, 2016Can You Pick The Drink That'll Actually Wake You Up?See if you actually know which magical wake-up potion is most potent.by Sally TamarkinBuzzFeed StaffLinkFacebookPinterestTwitterMailBuzzFeed Quiz Party! Take this quiz with friends in real time and compare resultsCheck it out! Just to give some context, for healthy adults, drinking up to 400 mg of caffeine per day is probably safe. 1. Social image via Starbucks.