13. You Really Change Every Year
Every year, you get way too many new atoms. That is, 98% of you becomes a new person.
14. Girls, Now You Know
We all know how oxygen is necessary for living. But, it causes aging also by oxidizing out our cells.
15. Size Perception
Street lights and the lines on the road are much bigger and thicker respectively than we perceive them to be.
16. Friendship Paradox
According to a research by sociologist Scott Feld in 1991, your friends will always have more friends than you do.
