If you do a google search on this guy one reference is wikipedia which says that he is "John Skoyles is a dyslexic[1] neuroscientist and evolutionary psychologist."
Our upright stance is very energy efficient, for it demands little muscle
action to sustain the vertical alignment of our body. In fact, we 'use only 7%
more energy standing than when lying down,' says neuroscience researcher
John R. Skoyles. He adds that a dog uses about 70 percent more energy
when standing (on all fours) than when lying down.
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