Mattress and Foundation. Be sure your mattress and foundation meet your needs for both comfort and support. If you sleep with a partner, your mattress should also allow you both enough space to move easily.
Light. Light is one of the body's most powerful time cues. The rising sun can wake up the brain long before the alarm goes off. A dark room is the most conducive for sleep – day or night.
Noise. Sudden, loud noises from inside or outside the home can disrupt sleep. Steady, low sounds, such as the whir of a fan or air conditioner, are soothing because they help block out distracting noises.
Temperature. The ideal bedroom temperature is 60 to 65 degrees Fahrenheit (16 to 18 degrees Celsius). A room that's too warm or too cool can disrupt comfortable sleep.