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睡眠負債 Sleep debt


I watched NHK program on a sleep debt the other day.
Putting its definition aside, I don’t like any kind of debts, such as money, sleep or trust and so on, and I think they are wrongness.
So I have tentatively checked whether I have a sleep debt or not, which shows not debt of mine as I had expected.
I was surprised the relationship between a sleep debt and the risk of development of cancer or dementia.
I think no merit can be seen even if we cut our sleeping for sacrificial hardworking.