Method
The yoga is performed without any humorous reason to laugh, with one practitioner observing that "The mind does not know that we’re faking it." Laughter yoga sessions may start with gentle warm-up techniques which include stretching, chanting, clapping, eye contact and body movement, to help break down inhibitions and encourage a sense of playfulness. Breathing exercises are used to prepare the lungs for laughter, followed by a series of ‘laughter exercises’ that combine the method of acting and visualization techniques with playfulness. Laughter exercises are interspersed with breathing exercises.Benefits
A 2018 review concludes that group interventions based on laughter Yoga improved depressive symptoms over the short term, but there is no good quality evidence to assess that laughter yoga is more effective than other group-based intervention. A 2019 review and meta-analysis in the field of laughter-inducing therapies suggests that they are more effective than humorous laughter and can improve depression. However, the quality of the evidence was low. A meta-analysis published in 2020 concludes that laughter yoga has no adverse effect and could have benefit for older adults in terms of physical function (blood pressure, cortisol level, sleep quality) and psychosocial health (life satisfaction, quality of life, loneliness, death anxiety, depression, mood, happiness). Seven publications were included in this meta-analysis, selected on a base of 3210.See also
* Study of laughter *References
Hasyayog Guru Jiten Kohi (May 2008) written book "Hasyayoga Vigyan" published in Hindi vide ISBN No. 978-81-906189-0-8 Hasyayog Guru Jiten Kohi (September 2008) written book "Urja Ke Panch Stort aur Hasyayoga" published in Hindi vide ISBN No. 978-81-906189-1-5 Hasyayog Guru Jiten Kohi (December 2010) written book "Hasyayoga Sanhita" published in Hindi & English vide ISBN No. 978-81-906189-6-0Further reading
* Birklbauer, Walter (2011), Why Laughter Yoga or The Guitar Method: A Neurologic View, {{ISBN, 3-8423-6907-7 *''The Laughing Club of India'' documentary by