For example; did you know that the majority of men with beards (about 68%) sleep with their beards tucked under the bed covers rather than over the bed covers?
And that beards grow faster and longer than hair on men's heads?
Human ears grow bigger in proportion to the rest of our bodies as we grow older? I remember I knew a man with his ears sticking out quite a bit. He looked like a car with its doors open.
Did you know that if you had a meal in a restaurant that is totally dark you would not be able to tell the difference between steak and a beefburger?
Did you also know that if you're in a vacuum and you shout loud no one would hear you? And it would make no difference whether the vacuum bag is full of dirt and dust or whether it was empty?
Do you realise that if you had a small bird in a cage and as you happen to weigh the cage if the bird jumped up from its perch then its weight would not register on the scale?
Also, if you were to weigh the cage under water the small bird would drown?
And in order to peel and cut an onion without tears you have to do it under water; that is if you can hold your breath for that long?
Here's a video I found with more scientific facts.