It puts the phone in a very deep state of sleep and limiting any unnecessary app activity. (androidauthority.com)
A consistent, peaceful bedtime routine allows your child to transition from the motion of the day to the tranquil state of sleep. (childdevelopmentinfo.com)
During sleep, your body temperature drops; the cooler you remain during the night, the easier it is to achieve deeper, more restful states of sleep. (mindbodygreen.com)