Sleeping

Getting your daily dose of zzz's may be against the boss' orders but they're very much in your doctor's list of recommendations. It's the world's favourite, most sought-after and common indulgence and the best part is—it's free! Better still, there's no need for moderation here. There's no such thing as too much sleep apparently because no matter how much you indulge, there are virtually no health drawbacks. 

Cutting down on it on the other hand can cause a whole host of problems from depression to anxiety to fatigue to fluctuating weight. So yes, we're telling you this is the best vice of them all. Roll up those covers, roll down those blinds, tuck yourself in and close your eyes. Vices have never been this good.