Life is dangerous: You could slip in the shower, get hit by a bus, mauled by a bear or drown in breasts (it happens, look it up). It always pays to be safe, and a life lived cautiously is a life lived long. For those of us who walk the cautious road and avoid the three lethal B’s–buses, bears and breasts–wherever possible, life should be more or less safe. Right?
http://www.cracked.com/article_18415_6-things-your-body-does-every-day-that-can-destroy-you.html