I can't say I have experienced what you are describing. Proper heating means that the room temp is 18-23C, so less than 37C. I guess 23C would feel warmer in higher humidity (>50%), because it inhibits your body's ability to cool itself effectively via perspiration. But this would depend greatly on your physiology and level of activity. Is this the mechanism you are referring to? Anyway for me I like my house at 18C and 30% humidity.