Dr. Kelvas notes that when the room is too hot or cold, the body has difficulty regulating these hormones, which can lead to difficulty falling asleep or staying asleep. The common recommendation for ambient room temperature is in the range of 60 °F (15.5 °C) to 68 °F (20 °C), according to the Sleep Foundation. It’s been found to aid the body’s thermoregulatory process to promote healthy sleep latency (the time it takes to fall asleep) and good quality sleep overall.

Temperature and the body – The human body has its thermoregulatory mechanism that allows us to maintain a healthy internal body temperature regardless of the ambient temperature of our environment. In addition, the body uses a complex interplay of physiological responses to regulate body temperature, including sweating, shivering, and changes in blood flow to the skin.