While learning Kalaripayattu in a city, it was not done in a traditional mud-based basement, but in a school hall. So there were fans available. When we used to perspire profusely from an intense warm-up, we would ask the guru if we could turn on the fan; he advised us not to, saying it would negate all the effort we put into the warm-up because the fan would cool down the body.
Although it initially seemed to make sense, I later found it hard to believe, since the fan couldn't possibly reduce blood circulation, body temperature, muscle and joint mobility, to such an extent that it could make the warm-up pointless. I felt that as long as we continued with our exercises, it would be fine to leave the fan switched on at medium speed just to evaporate the perspiration and the stink it creates.
Is this an accurate assumption?