Rather, there is no such research. Because there is no hardening.
The idea of hardening grew out of the myth of the common cold that attacks frozen people. Then it was assumed that the better a person adapts to the cold, the less chances that he will catch a cold in the coming winter. Remember the verse about Uncle Styopa's son, who slept with the window open in winter?
The myth of a cold from the cold is so ingrained into the heads of people that the last five years in serious treatment manuals for the common cold began to remind separately that exposure to cold does not lead to to the common cold.
I'm serious. Previously, these evidence sources simply listed a list of causes for colds and a list of helpful activities. Now, especially for the stubborn ones, they remind them that it's not the cold. That is, evidence-based medicine cannot cope with such an influx of walruses.
And still the idea of hardening lives on. She is supported by conformist doctors who fear being unpopular with their flock. The people believe in tempering, and doctors play along with the people. It's disgusting. Fu!
Hardening is usually associated with something cold, and cold like contrast procedures many people invigorate and improve their mood. We have already discussed this matter several times. Swimming in icy water reduces depression and so on.
For the same reason, people enjoy massage, manual therapy, acupuncture, and steam bath poultices. Everything that tickles sensitive nerve endings is carried out passively and increases the pain threshold, all this attracts people.
But all sorts of boring exercises to mobilize injured joints every day for six months in a row do not really attract people. Because you have to do something unpleasant yourself every day. It is depressing. Better to do something nice and fun.
How do you feel about conformist doctors who are afraid to tell people the truth?
