Cheese78CA
Senior member
- Jul 6, 2000
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You're experiencing the circadian rhythm (one's biological clock) at work. The cycle is adapted to the 24 hours of the day and is highly sensitive to light--which explains how people eventually adapt when traveling. Even without rest, you will always be more vigilant in the morning hours on the 2nd, 3rd, 4th, 5th days. However, there is another apparatus at work here; namely, your sleep debt bank. Without rest, you will simply become more and more tired especially when the night rolls around.
Originally posted by: KingNothing
On a related note, the physiological effects of not going to bed at all are interesting, at least for me. I normally get 7 hours a night or so, but one night I didn't go to bed. Around 6:30 in the morning I got really tired but I forced myself to stay up, and then I got progressively more awake. By 10 am I felt like I was hopped up on caffeine and a little giddy. Wasn't tired at all the rest of the day and I went to bed at normal time that night.
