The concern is not the act of reading, but rather the additional exposure to light suppressing melatonin production. Melatonin plays an important role in the s

The concern is not the act of reading, but rather the additional exposure to light suppressing melatonin production. Melatonin plays an important role in the sleep/wake cycle. Avoiding unnecessary light for a period of 3 hours prior to sleep gives the body a chance to run it's shutdown scripts by producing enough melatonin, etc. https://www.foundmyfitness.com/episodes/melatonin-insulin-response https://www.foundmyfitness.com/episodes/melatonin-insulin-re...