The energy powering your body comes from chemicals in the food you eat reacting with oxygen in the 'catabolic' processes. The resulting chemical compounds have a lower energy state than the starting material, so the conservation of energy means they must liberate the excess energy- and that is the source of 'go' used to power metabolic processes.
You missed the point. I know what makes the muscles go, the heart beat, all that good stuff. I'm talking about animation. Cars have plenty of "go", as you put it, but there are not "alive".
Just because a chemical reaction creates low voltage in the cerebral cortex does not mean there will be a personality, likes, desires, needs... nothing. There are plenty of brains in the animal kingdom that don't produce anything other than basic instinct. So what makes a human different? It definitely isn't the complexity of the brain, because other than some differences in size our brain is no more or less complex than that of other mammals. Computers function similarly to a human brain- electrical impulses supply alternating "yes" and "no" answers to basic questions and something happens as a result. What makes the human different?
The animating force is what I was referring to. Personality, rational thought, desire, ingenuity, none of these things are born from chemical process. If they were, the insects of this planet, who possess the same chemical functions as we do, would have decided we were unfit to rule this planet and exterminated us long ago. These things all require energy. Compelling a mass of cells that are breaking down other material for energy to work together to do something, the mere fact that we're even having this debate, speaks to the notion that there is energy being expended that isn't chemical or electrical.
Also, what makes you so sure there isn't anything there? As trite as it may be to say this, I've never seen my brain... so how do I know it's even there? I've never seen you... so do you really exist? Science has yet to measure the soul... so is it there?
I'd rather spend my life believing in something positive, such as an afterlife or continued existence, than wandering around crippled from the brain down because I can't stand the idea that one day nature will do what it does to all creatures and that- oh no!- I'm no exception to the rules.