Our big brains don't come cheap. While they account for just 2 percent of our body weight, they use about 20 percent of the oxygen in our entire bloodstream.
(Russell Mclendon, 2015)
Our big brains don't come cheap. While they account for just 2 percent of our body weight, they use about 20 percent of the oxygen in our entire bloodstream.
(Russell Mclendon, 2015)