... . Adjust your sleeping temperature from 30 to 48 degree 2.Energy saving 3.Certificated:RTTE,SAA, CE,ETL,FSE,PTC,EMC,LVD ... can interfere with your ability to fall or stay asleep. For example, arthritis and other conditions that cause pain, backache, or ... to make sleep less refreshing and result in daytime sleepiness. For women, pregnancy and hormonal shifts including those that cause premenstrual ...