In most places, if it's 2am and you want to fix a cabinet, tone your abs or trim your bangs, you'll have to wait until tomorrow—that's just the way society works. But New York is different. Everyone knows that the City offers copious late-night drinking and dancing options, plus a dictionary-thick, round-the-clock menu of great food—for example, pierogies at Veselka and franks at Gray's Papaya. Some may not be aware, however, that the five boroughs are also home to a menagerie of unusual 24-hour establishments proffering virtually every product and service imaginable. To get the inside scoop, we drank a whole lot of guarana-infused Vitaminwater, stayed up late and set out to discover why certain people are taking care of business when most of the world is getting its beauty rest—and why you might want to consider doing the same.