4 Interesting Facts You Didn't Ask For 😧

four interesting facts you didn't need to know number four have you ever noticed that little round hole in elevator doors well it's actually a keyhole that will open the doors if you have the special key number three have you ever wondered why you can't tickle yourself it's because what makes tickling effective is the

unpredictability of the tickler and because you can predict every move that you make you can't tickle yourself number two have you ever wondered why your skin wrinkles in the water well it happens because the blood vessels under your skin get smaller and some scientists think that humans evolve to have this reaction because it makes it

easier to grip things while wet number one why do grocery carts have these loops on them it's so you can hang grocery bags with delicate items like bread and eggs