Do you feel groggy in the mornings but still struggle to fall asleep at bedtime? Do you often have trouble sleeping through the night and then suffer for it the next day? Since the advent of electricity, scientists have studied the effects of light on sleep. Electric lights — particularly the blue light emitted by computers and other electronics — interfere with the chemicals that regulate our circadian rhythms or sleep cycles. Anyone who has worked a night shift or flown across time zones can attest to this. Long after the sun has set, these lights trick the brain into thinking

To see the full content, share this page by clicking one of the buttons below