Most sleep scientists believe the average person sleeps in a room that is:

• A. Too cool.
• B. Too warm.
• C. Too noisy.
• D. Too dark.

Answer: (B)

A cooler sleep environment supports the body’s natural cooling that happens as you fall asleep. As you enter sleep, your core temperature drops, and a room that’s not too warm helps your body shed heat more effectively, promoting deeper sleep and fewer awakenings. When a room is too warm, heat dissipation is hindered, leading to discomfort, restlessness, and lighter sleep, which is why many sleep scientists say the average person sleeps in a room that’s too warm. While factors like noise and darkness do affect sleep, temperature has a larger and more consistent impact on overall sleep quality for most people. A commonly recommended range is about 60–67°F (15–19°C).