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.

2 comments:

froggy said...

taking a deeeeeeep breath!

Kyle said...

Joy, I guess stopping to breathe and clear your thoughts has merit.