It is possible for the body temperature to be controlled by brain, say scientists from Singapore.
A team of researchers led by Associate Professor Maria Kozhevnikov from the Department of Psychology at the National University of Singapore (NUS) Faculty of Arts and Social Sciences found that core body temperature increases can be achieved using certain meditation techniques (g-tummo) which could help in boosting immunity to fight infectious diseases or immunodeficiency.
AdvertisementThe study documented reliable core body temperature increases for the first time in Tibetan nuns practising g-tummo meditation.
Considered by Tibetan practitioners one of the most sacred spiritual practices in the region, g-tummo meditation is very rare, practiced at only a few monasteries in the remote areas of eastern Tibet, a university release said.
The researchers collected data during the unique ceremony in Tibet, where nuns were able to raise their core body temperature and dry up wet sheets wrapped around their bodies in the cold Himalayan weather (-25 degree Celsius) while meditating. Using electroencephalography (EEG) recordings and temperature measures, the team observed increases in core body temperature up to 38.3 degree Celsius.
A second study was conducted with Western participants who used a breathing technique of the g-tummo meditative practice and they were also able to increase their core body temperature, within limits.
The two aspects of g-tummo meditation that lead to temperature increases are "vase breath" and concentrative visualisation. "Vase breath" is a specific breathing technique which causes thermogenesis, which is a process of heat production. The other technique, concentrative visualisation, involves focusing on a mental imagery of flames along the spinal cord in order to prevent heat losses. Both techniques work in conjunction leading to elevated temperatures up to the moderate fever zone.
Assoc Prof Kozhevnikov explained, "Practicing vase breathing alone is a safe technique to regulate core body temperature in a normal range. The participants whom I taught this technique to were able to elevate their body temperature, within limits, and reported feeling more energised and focused. With further research, non-Tibetan meditators could use vase breathing to improve their health and regulate cognitive performance."
The study has been published in the journal PLOS ONE.
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