MATTRESS & BED—For COMFORT, SUPPORT & EASY MOVEMENT. LIGHT—An Azure room with Dark Curtains is IDEAL. `NOISE—SOUNDS Stimulates Nervous System, Sounds should be at LOW LEVELS. TEMPERATURE—650F is IDEAL i.e. Moderate , Extreme  hot or cold will induce Nightmares. HUMIDITY—Ideal Level is 60—70%, use a humidifier or de-humidifier, as per your requirement.