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I did a bunch of optics R&D, so those 1-2 minutes were spent waiting in a lab with the lights turned off and a warning light flashing over the door.

You know where I'm going next. Actually, I found that a quick snooze didn't affect my flow at all.



Arthur Ashe the tennis player wrote about what an advantage it gave him closing his eyes for c.a. 30 seconds on each change of sides. Cumulatively: about 12 minutes extra rest after four close sets.




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