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"How to know if (or when) I fall asleep, and not merely just lying there doing nothing?" Sleep Retrograde Amnesia: Retrograde amnesia refers to the loss of memory for things preceding a certain event. When we talk about retrograde amnesia in the context of sleep, this event is sleep onset. You not remembering has to do with your short term memory ...


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Modern smartphone apps offer this information. A smartphone has a gyroscope built in, and when you lay it on the mattress close to your body, it picks up tiny movements. As you fall asleep, your musculature relaxes, and the app knows how to distinguish the movements of a person in deep sleep, light sleep, and lying awake. It provides you with a record of ...


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There is a reason you get tired after eating - It's due to a portion of your blood in your body moving to your gut and bowel, leaving less for the rest of your body (brain, muscles etc) and slowing you down, making you sleepy(1)! Whether is is healthy or not, it's neither here nor there. It can mess with your natural sleeping cycle, but it is also not good ...


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From this article: Scientists from the University of Tokyo are unsure whether it is the napping itself or an underlying condition which makes people more sleepy, that is driving the effect. After examining more than 200 studies involved 261,000 participants, they found that severe daytime fatigue was associated with a 56 per cent increased risk of ...


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