Brief Answer:
Let me explain

Detailed Answer:
Hi,

Tummo breathing is a traditional practice of meditation. In ancient days yogi' s and monks used to serve in cold climate as well as in hot temperature during their travel. Depending on the climate and atmospheric changes they will adopt their physiological activity and need through meditation.

In such a way surviving in cold climate they need to maintain the body temperature with atmospheric temperature. So they used tummo meditation. In tummo breathing, meditation influences the thermoregulator in the brain

So there is a increase in body temperature.Scientific studies also done in west to prove this.

Study was conducted in Western participants (a non-meditator control group) instructed to use the somatic component of the g-tummo practice (vase breathing) without utilization of meditative visualization. Reliable increases in axillary temperature from normal to slight or moderate fever zone (up to 38.3°C) were observed among meditators only during the Forceful Breath type of g-tummo meditation accompanied by increases in alpha, beta, and gamma power.

The magnitude of the temperature increases significantly correlated with the increases in alpha power during Forceful Breath meditation. The findings indicate that there are two factors affecting temperature increase. The first is the somatic component which causes thermogenesis, while the second is the neurocognitive component (meditative visualization) that aids in sustaining temperature increases for longer periods.

Without meditative visualization, both meditators and non-meditators were capable of using the Forceful Breath vase breathing only for a limited time, resulting in limited temperature increases in the range of normal body temperature.

Overall, the results suggest that specific aspects of the g-tummo technique might help non-meditators learn how to regulate their body temperature, which has implications for improving health and regulating cognitive performance.

Hope I've provided a clarification. Kindly let me know if there's any further queries.
Regards
Dr.s.senthilnathan

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