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PUBLIC MARKS from charts with tags natural & brain

30 March 2007 22:45

Good sleep, good learning, good life

by 10 others

20 minutes of physical effort per day is considered a healthy minimum for everyone who wants to keep fit, sleep well, and show good long-term learning results.

sleep time circadian hours people free learning cycle running night rhythm sleepiness sleeping long brain minutes asleep clock caffeine work

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PUBLIC MARKS from charts with tags natural & brain

30 March 2007 22:45

Good sleep, good learning, good life

charts's TAGS related to tag natural