02:24:47. Awake. Went to bed at 1030. Now up, fully alert and refreshed, only 4 hours later. Very strong and loud ringing in the ears.
Yesterday, I slept in late, until noon. I felt I had a cold coming on and heavy fatigue. Did not take an afternoon nap. Attempted to gauge the point at which I would be tired enough for bed.
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In the attempt to understand my sleep and fatigue problems, I have been reviewing the available scientific literature. Years ago, when I engaged in aerobic running, it was understood that fatigue was a consequence of the build up of lactic acid in the muscle and the depletion of muscle glycogen. This resulted in the sense of fatigue.
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I do not know what I am doing.
Went for afternoon nap. Woke from nap and realized it was early, before 0500 and therefore went back to sleep. Slept until 0700. Which I now realize is not 0700 but is actually 1900. Have this horrible sense of “How did I manage to do that?” It is a very negative feeling, as if I am adrift in space and unable to become anchored.
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