According to sleep experts, a cooler temperature helps the body to sleep better. On the other hand, a warmer temperature is energising – like how it is when we exercise. Our body is also equipped with thermoregulation abilities – the capacity to maintain an optimal temperature.
However when we sleep, body thermoregulation becomes less efficient, which means we cannot bring down our body temperature so well when it rises up. Thus, when it gets warmer, we tend to wake up as a higher body temperature correlates with alertness and activity. Sleep is often disrupted due to our hot and humid weather. You toss and turn all night long because it is simply too warm to stay in one position comfortably.