I have zero evidence, but I think it may have to do with sense of touch. For me it's more comfortable to be in a cold room under a blanket than to lie on a bed

I have zero evidence, but I think it may have to do with sense of touch. For me it's more comfortable to be in a cold room under a blanket than to lie on a bed in a warm (or even hot) room. Similarly, I'm one of many people who enjoy lying in a bathtub. It somehow feels relaxing. The touch, the pressure of warm water. Studies on autism might shed more light. Temple Grandin even built herself a machine which would touch her from sides, the way cows are.