You don't have to look far to find the (mostly) positive and surprisingly powerful effects of meditation. But one of the more unexpected effects was just recently published: Tibetan nuns can change their core body temperatures with a certain form of meditation, which could keep them warm and help give their immune systems a boost.
Tibetan nuns practice "g-tummo" meditation, a spiritual practice they believe harnesses "inner energy." Using EEGs and temperature measurements, a team of researchers recorded the internal temperature of nuns in the freezing cold of the Himalayas. The nuns, the researchers found, were able to increase their core body temperature with this technique--up to almost 101 degrees Fahrenheit. Westerners were also able to increase their core body temperatures slightly when taught the process.
Two techniques, specifically, caused the change. "Vase breath" is a breathing technique that causes heat production, and visualization--in this case, of flames near the spine--also accounted for the increase. Useful if you're out in the cold, but the technique, researchers say, could also be helpful in strengthening the immune system. Some folks in the remote parts of Tibet can give you some lessons, if you're interested.
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What an odd an difficult place to sit.
He has no toes on his right foot.
Just a observation.
I live in a cold climate, and can raise my body temperature on command. I have used it to impress a few people, and my girlfriend is really appreciative when she gets home and I can "turn up the furnace" for her.
For example, the heat comes from my core. How amazed she was when she placed her hand over my heart, and over the course of a minute felt a dramatic increase in temperature.
It's taken a while to get good at it, but I can do it in about three minutes with minimal concentration now.
Visualization and breathing are the two techniques I use.