Thursday, February 18, 2010
O2
The brain comprises about 2 percent of a person’s total body weight. Yet it requires 25 percent of all oxygen used by the body, as opposed to the 12 percent used by the kidneys and the 7 percent used by the heart.
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2 comments:
taking a deeeeeeep breath!
Joy, I guess stopping to breathe and clear your thoughts has merit.
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