You've heard that using screens before bedtime can mess with your sleep, but new research suggests the problem is even more serious and can make you feel like a zombie the next day. The findings could impact anyone who uses an eReader, laptop, smartphone, or certain TVs before bed.
"We know from previous work that light from screens in the evening alters sleepiness and alertness, and suppresses melatonin levels," Dr. Anne-Marie Chang, an associate neuroscientist in BWH’s Division of Sleep and…