First of all, the humor(laughther) relaxes the whole body, protects the heart, dissolves distressing emotions and others.
The humor , as I said before is a magical antidote that dissolves all the problems that you have.
Secondly , the humor produces a sentational emotion that produce a smile, and this makes to you a lots of things.
In conclusion, humor is a very impotant for the human race because produces a lots of things in your body and makes you laugh.