Why can't I sleep properly?
Doctors have shown that temperature is a key parameter of sleep quality. Fluctuations in body temperature regulate the body's circadian rhythm, and our sleep. Especially, it regulates when we are ready to go to sleep and when it's time to wake up.
To fall asleep, we need to cool down. Body temperature needs to drop by about 1.8°F/1°C. Ever wondered why you flip your pillow to the cool side when you cannot sleep?