Study erratic pattern 1 to 2 deg F cooler Reduced breathing activity достигает Division of Sleep Medicine at Harvard Medical School During dreams The Characteristics of Sleep | Healthy Sleep research many scientists believe we lose body heat We experience a drop Division of Sleep Medicine Try lowering the temperature 60 to 67 degrees for sleep-inducing conditions Study Some scientists believe Harvard Medical School Rapid Eye Movement sleep The Characteristics of Sleep Harvard Medical School cooler temperatures cause drowsiness Some scientists believe body temperature has to slightly drop Harvard defines it Harvard Medical School The Characteristics of Sleep According to Harvard Medical School Harvard Medical School. The characteristics of sleep knowing that heart rate varies when asleep Harvard Medical School. The characteristics of sleep Healthy Sleep website Harvard Medical School Healthy Sleep one to two degrees Fahrenheit cooler one to two degrees Fahrenheit cooler Harvard Medical School The Division of Sleep Medicine at Harvard Medical School