Why can we not sleep when we’re too hot in bed, but will nod off by a roaring fire or in a warm lecture theatre?

Question

Why can we not sleep when we’re too hot in bed, but will nod off by a roaring fire or in a warm lecture theatre?

In: Other

Answer 1

Another reason you might get tired in a lecture theatre is the CO2 concentration in the room might gradually rise, especially when the room has poor ventilation and lots of people