This "social jet lag" alters physiology in a way similar to travel jet lag.Ever since I was writingback in the mid-2000s and I was exploring the idea of what a nocturnal lifestyle would actually do to a human body, I got interested in what we now call “sleep hygiene," which is why a recent paper on sleep timing and the effects of “social jet lag” caught my eye.
Ambient light levels and physical exercise are both powerful factors for resetting and entraining our. Both of these can be disrupted by changes in wake-up times that might occur in real “jet lag” from travel to a different part of the world or as induced by altering sleep hygiene deliberately.
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