Even though sending an old-fashioned letter seems to be a thing of the past, there are still some people out there that know what a stamp is and what it is used for. However, there is one fact about the stamp that the majority of people are going to be unaware of, and it is a fact that is actually pretty cool all on its own.
If you get any stamp and do the customary thing of licking the back of it, then in the process of doing so you are consuming 1/10th of a calorie. Okay, so it would involve you licking a number of stamps to build up those calories, and the taste would be horrible, but it is all to do with the sticky resin that is on the back of them. When you think about it, this also shows you how easy it is to build up the calories even when you are not aware that you are doing so.