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Why should we laugh? The Science behind Laughter

Savitha Hosamane has been often tagged and labelled the laughter queen for her work with laughter and on culture building with organizations. She believes one must often laugh and there's a complete science to what it does to a person. Here's an excerpt from Savitha Hosamane's Book Erupt With Joy that elucidates this concept. Read ON!
Erupt With Joy

A Japanese proverb says “laughter is the music of soul”. The only man is capable of laughter, no other animal can laugh. It is a beautiful gift of the divine. Divinity knocks on the doors of a happy soul. A person who is full of laughter has the touch of the divine.
Laughter is the best medicine. It is available within us freely. It has been found that if a healthy person does not laugh, very soon he is bound to fall sick, whereas if a person can laugh even when he is sick he will become healthy soon. Each one of us possesses this valuable gift.
So, why not laugh and be merry?

What happens to us when we laugh?

Laughter can change almost everything within the body, mind, heart, brain, and soul…. from the surface to the inside….

Erupt With Joy

Physical Self - Body

Mental Self - Mind

Emotional Self - Heart

Intellectual Self - Brain

Spiritual Self – Soul

Laughter and physical self

Laughter triggers healthy physical changes in the body.


  • Boosts immunity - laughter boosts the immune system. Laughter decreases stress hormones and increases immune cells and infection-fighting antibodies, thus improving resistance to disease.
  • Laughter triggers the release of endorphins, which are the happy hormones- the body’s natural feel-good chemicals. Endorphins promote an overall sense of well-being and can even temporarily relieve physical pain.
  • Laughter protects the heart. Laughter improves the function of blood vessels and increases blood flow, which can help protect you against a heart attack and other cardiovascular problems.

Laughter relaxes the whole body. A good, hearty laugh relieves physical tension and stress, leaving your muscles relaxed for up to 45 minutes afterward. Norman Cousins real-life story of healing himself with laughter has been told in major medical and lay journals around the world.

Norman cousins was a long-time editor of the Saturday Review, global peacemaker, the receiver of hundreds of awards including the UN Peace Medal and nearly 50 honorary doctorate degrees. In 1964 following a very stressful trip to Russia, he was diagnosed with ankylosing spondylitis (a degenerative disease causing the breakdown of collagen), which left him in almost constant pain and motivated his doctor to say he would die within a few months. He disagreed and reasoned that if stress had somehow contributed to his illness (he was not sick before the trip to Russia), then positive emotions should help him feel better. With his doctors’ consent, he checked himself out of the hospital and into a hotel across the street and began taking extremely high doses of vitamin C while exposing himself to a continuous stream of humorous films and similar “laughing matter”. He later claimed that 10 minutes of belly rippling laughter would give him two hours of pain-free sleep, when nothing else, not even morphine could help him.

Laughter and mental self

Laughter makes you feel good from the inside. Laughter gives you courage and inner strength.


Erupt With Joy Relieves mental stress: Laughter helps to relax and recharge. It reduces stress and increases energy, enabling to stay focused

Adds joy and zest to life: Laughter dissolves distressing emotions. One cannot feel anxious, angry or sad during laughing

It enhances resilience (ability to recover from illness, change or misfortune): Laughter shifts perspective, allowing you to see situations in a more realistic, less threatening light. A light-hearted perspective creates a psychological distance, which helps avoid overwhelming feelings.

Laughter improves mood. A good laugh works faster to bring your mind and body back into balance.

Laughter and emotional self

Playful laughter builds communication and strengthens our relationships by triggering positive feelings and nurtures emotional connection

  • Let go of defensiveness - Laughter helps to forget judgments, criticisms, and doubts and thereby promotes group bonding and enhances teamwork
  • Be more spontaneous - Laughter attracts others to us instantaneously
  • Helps defuse conflict - Laughter keeps us away from troubles
  • Release inhibitions– The fear of holding back and distress within are set aside
  • Express true feelings -Deeply felt emotions are allowed to rise to the surface

Laughter and Intelligence Self

Laughter changes the brain waves. It changes intelligence – it makes one more intelligent. The parts of the mind that have been asleep suddenly wake up. Laughter reaches the innermost part of your brain. Blood flow changes and brain cells become more active.

Erupt With Joy Brain activity during laughter

What happens in the brain when we hear a joke?

The left side of the cortex (the layer of cells that covers the entire surface of the forebrain) analyses the words and structure of the joke. The right hemisphere of the cortex carries out the intellectual analysis required to "get" the joke.

The brain's large frontal lobe, which is involved in social-emotional responses, becomes very active. Brainwave activity then spreads to the sensory processing area of the occipital lobe (the area on the back of the head that contains the cells that process visual signals). Stimulation of the motor sections evokes physical responses to the joke.

Brain waves: The brain consists of millions and millions of neurons. These neurons communicate with each other via electrical impulses depending on the task one is doing (active thinking, sleeping, dreaming, meditating and so on). All neurons are not engaged. In a task like reading or calculating, many neurons are active. Active neurons send electrical impulses to one another, whereas fewer neurons are active during sleep. This makes sense since our brain is barely active in the sleeping phases. When these impulses are measured with an electroencephalogram (EEG) all these impulses result in a wave. These waves originate in the brain and are called brain waves, logically.

For example, in non-active thinking tasks like sleeping, these brain waves are rather slow and of low amplitude. In an active thinking task, these brain waves are quite fast and in a higher amplitude.

Erupt With Joy Gamma waves: There are many different brain waves. Gamma waves are one of them. These waves improve alertness, creativity, and memory by engaging the brain. This, in turn, makes the immune system work better and changes brain wave activity towards what’s called a “gamma frequency”, ramping up memory and recall. Laughter engages the entire brain. Laughter leads to learning

Laughter changes intelligence as both the sides of the brain are engaged and the brain waves(gamma) also increase learning. Research indicates that laughter also increases endorphins, sending dopamine to the brain to provide a sense of pleasure and reward.

"Joyful laughter immediately produces the same brain wave frequencies experienced by people in a true meditative state," says Lee Berk, lead researcher of the study and associate professor of pathology and human anatomy at Loma Linda University.

(This article was written by Stephanie Eckelkamp and originally appeared on

Erupt With Joy Information about the limbic system (hippocampus + amygdala)

  • Seat of learning and memory
  • Regulates moods and emotions
  • Controls laughter, friendship. Love and affection
  • Changes brain-wave patterns
  • Hippocampus – center for generation of new neurons (neurogenesis) with exercise and reduced stress levels
  • Memory Retention is high
Note: It has been scientifically demonstrated that emotional intelligence is actually more important in predicting success in the workplace than IQ (cognitive intelligence).

Laughter and spiritual self

Erupt With Joy Laughter is a spiritual prayer. When we really laugh, for those few moments we are in a deep meditative state. It is a tremendous meditation state. When laughter arises out of meditation, it will be a totally different quality of laughter. It will be laughter about oneself.
Osho highlighted that everything that we have has its counterparts in the body, in the mind and the soul. The purest will be in the soul and the crudest will be in the body.
The mind is just in the middle of the two; it will be half primitive, half cultured. That’s how all these three layers of the body function in harmony. When one has a real heartfelt belly laugh, all the parts of the being – the physiological, the psychological and the spiritual – they all vibrate in one single tune, they all vibrate in harmony. Hence, laughter relaxes. And relaxation is spiritual. Laughter brings one to reality as it is.
While this article is truly inspiring and insightful, the book Erupt With Joy has a lot more content that you cannot miss reading. The book is available both on & for you to grab a copy of your own.

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Any facts, figures or references stated here are made by the author & don't reflect the endorsement of iU at all times unless otherwise drafted by official staff at iU. This article was first published here on 25th May 2020.

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