Very interesting; I always wondered who is the "master of the temperature controls in a plane". Thanks.

I've never noticed that the cabin may be 22c or 23c warm. I'm very surprised about these high figures. Maybe the steady flow makes me feel the temperature is actually lower ... (but still warm).

It is also recommended to make the temperature in the car not too high because the driver may feel sleepy. So it must be true that high temperature makes humans sleepy. But otherwise it is also recommended to have the temperature in the slipping room not higher than 18c.