Scientists say you can use your brain to increase your core body temperature.
Researchers have been studying ancient Tibetan techniques, and they have found that meditating can make you warmer.
Scientists say this is a great discovery because it means body temperature can be controlled by the brain. This could have major implications for people working in extreme environments.
But to increase the core body temperature, it takes certain meditation techniques.
Tibetan nuns use g-tummo mediation. Previous research has shown only g-tummo meditators are able to increase the peripheral body temperature in their fingers and toes.
Using electroencephalography (EEG) recordings and temperature measures, the scientists observed increases in core body temperature.
A second study was then done 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.
So this means that specific aspects of the meditation techniques can be used by non-meditators to regulate their body temperature through breathing and mental imagery.
Researchers say this could allow us to adapt to cold environments.
So what are the techniques?
The two aspects of g-tummo meditation that lead to temperature increases are 'vase breath' and concentrative visualization.
'Vase breath' is a specific breathing technique which causes thermogenesis, which is a process of heat production.
The other technique, concentrative visualization, involves focusing on a mental image of flames along the spinal cord in order to prevent heat losses.
Both of these lead to elevated temperatures up to the level of moderate fever.
Participants say the practice made them feel more energized and focused.