https://news.yahoo.com/napping-genes-not-behavioural-choice-205740616.html
Max Stephens
Sun, February 28, 2021, 3:57 PM
Napping is in the genes and not a "behavioral choice," a Harvard study has found.
Through examining the genomes of nearly half a million people from the UK, scientists discovered that daytime napping is “biologically driven”.
Researchers at Massachusetts General Hospital identified 123 regions in the human genome, which were associated with daytime napping.
Digging deeper into the data, they identified three potential napping mechanisms.
The first two, dubbed "disrupted sleep" and "early morning awakening" refer to people who nap because they either did not get enough sleep the night before or woke up at the crack of dawn.
The third referred to sleep propensity - how much sleep is required by a particular individual.
Dr Dashti said: "This tells us that daytime napping is biologically driven and not just an environmental or behavioural choice."
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It comes after findings from the British Medical Journal that a five-minute nap in the afternoon can improve the memory and keep the brain more agile.
People who took regular afternoon naps appeared to speak more fluently and remember things better than those who did not break up the day with some sleep, according to the study.
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