Humor is necesary to survive?

In our life the humor is a thing which nobody can describe it in a exactly presition, if nobody knows the exactly description, how is possible to afirm that humor is necessary to survive? Well, humor isn't a need for our lives because it doesn't make a vital role and helps us to live so, why do we laugh?

No one can say why, but yes we can say what make us laugh. There are a lot of types of humor and we express that with our bodies and movements in the face. This reactions aren't good for the health. But it helps to the self-esteem and encourage and make people work or do things in a good way or acting well because humor caracteritzes tthe people and their behaviour. The human feelings are very complex. Things in humans can change their humor, and humor(laughs) can make them happy or stress can make them unhappy. The present day life of person is very stressing cause of the job, rutine and economical problems... it affects all the world and we have to attack that with encourage and happynes.. how? with funny things, laughs and nice things.

In conclusion, the humor is necessary for our lives, is the essence of the life, the way to scape of the sadness and the way to get the happiness. Humor has been necessary in our life for a lot of years.