Laughter is an universal part of the human vocabulary. Everyone understands it... There are no language barriers. Everyone is born with a capability to laugh. An interesting thing about laughter is that it appears unconsciously. We don't decide to do it... It just happens.

It is known that laughter is triggered by various sensations and thoughts, but the exact brain mechanisms aren't fully researched. It is known that while laughing some changes happen in the limbic part of the brain. While laughing, many parts of our body are active - our facial muscles, muscles of the arms, legs and trunk. Laughter also makes our breathing pattern to change. It has been proved that laughing protects our heart. Studies have also shown that laughter lowers the sugar level in our blood.

They say that laughter is the best medicine. There are a lot of therapies around that use laughter and humor to help patients. Most known therapies are humor therapy, clown therapy, laughter therapy, laughter meditation and laughter yoga.

Many studies have shown that the purpose of laughter is making human connections stronger. Studies have also shown that dominant individuals such as bosses use their humor more often than their employees.

First laughter appears usually at babies who are around 3.5 or 4 years old.

Laughter has many useful benefits that can help people live longer. Here are some:

* Physical relaxation -- Your body sometimes has the urge to laugh or cry... Afterwards, you will feel better.
* Hormones - Levels of stress hormones like cortisol or adrenaline are being reduced while laughing.
* Social angle - If you're a laughing kind of person, everyone will want to hang out with you. That's a fact.