Video: You know that friends will be there for you when the rain starts to pour, and because you're there for them too. But there are plenty of interesting facts about friends you probably don't know. In this video from the Mental Floss YouTube channel, host John Green fills you in on the facts about friendship. You'll learn that while the number of friends you have at any given time usually remains the same, you lose and replace about half of your friends every seven years (so enjoy the time you have), and that not getting enough social interaction in your life can have negative health effects similar to smoking or drinking too much alcohol. You'll also learn that spending time with your friends can help you fight and recover from disease, keep you from feeling too stressed and that people with large networks of friends tend to live about 22 per cent longer. So go find some friends and hang out with them.
26 Facts about the Science of Friendship [YouTube]