No we are "run" as far as nerve impulses are concerned, the sudden undoing of the dis equlibrium condition the "sodium pump" has made. I.e. a rapid influx of sodium ions back into the interior of the nerve axon. This influx rapidly moves from the base of the axon down the lenght of the axon, but can and some times does, "run backwards." Normally the interior is at -70mV (called the "resting potential") as the sodium pump has pumped + Na ions out to the exterior. Mussel contraction is a little more complex and I have forgotten the details. ATP plays a very central role. to call one name "better" than another, without telling how it is better -For example shorter, easier to spell and write. "god" scores high by those criteria. One of the more satisfying answers to that question as Hawkins has said is that the total energy is and always has been zero. I.e. the big bag was the separation of positive energy as in EM radiation, gravity fields, and later when the temperature was much lower, some of the +E condensed into particle masses (E =M^2) and at "t=0," the BB made an equal quantity of negative energy as in "dark matter" and dark or negative energy. The suggestion that net positive energy comes from god (or "higher power, if you prefer) is just "sweeping the problem under the rug." Where it god get it from? For a money example: You can start with nothing, borrow $10 and owe $10. If you only think or remember /know about the +$10 you can have the illusion that your net worth is positive.