Laughter is the best medicine. Laughter stimulates the feel good chemicals in the brain, so you want to do it over and over. The whole business of laugh is what scientist call stereotyped. People may make different noises and faces, laugh at different intensities, and have a different sense of humor but the commands human brain give out during a guffaw are a receipe followed precisely. Here’s what happens throughout the body.

Face time—when we laugh, as many as 15 small muscles squeeze our faces into a smile. Increased blood flow there may turn us a bit pinker a give us a happy glow.

Eyes have it—if the laugh is vigorous enough, our tear ducts can activate. Sometimes our glee can have a cumulative effect till we literally crying with joy- and studies show that tears, whether happy or sad, may reduce symptoms of stress.

Mouth off—Of course our mouths open to let those ‘ha-ha” rhythmic blasts of vocalized air. In addition scientists have tested the saliva of patients after laughing and found that they have higher levels of disease fighting agents called immunoglobulin.

Wrestle your vessels—our heart rate and blood pressure spike briefly when we laugh. They increase a bit even when we chuckle while sitting in a chair watching a funny movie. In addition to possible immune benefits noted earlier, laughter seems to help diabetics keeps their glucose levels in check.

Pain reliever--- Whether in our extremities or up in our brains, laughter seems to have an analgesic effect: It increases our tolerance for pain.

Belly laugh—a hearty laugh can cause us to double over and tense all our major muscle groups for minutes at a time. According to scientist Laughter is exercise. The heart rate and blood pressure go up while you are laughing but then they fall down below your baseline afterwards, the same as with exercise. This could be very important exercise, for elderly and sick people who can’t get out and run three kilometers.

Tips –Laugh yourself skinny- Can a few minutes of hearty laughter replace your trade mill time? No, but getting the giggles does burn some calories, and more you laugh, the more you burn, say experts. Chuckle for 15 minutes every day for a year and you could drop up two kilos- and that’s nothing to laugh at.