You have more than six hundred muscles in your body. Pick one of those muscles at random—say one of the eight in your tongue. Its cells will contain protein fibers. These consist of long chains of amino acids, which in turn contain nitrogen atoms. Now pick, at random, one of those nitrogen atoms.
We like to think that we can control the contents of our mind, but if we watch ourselves think, we will quickly realize that this isn’t so.If you don’t believe me, try this experiment. Sit in a quiet room for five minutes, during which time you stare at a blank wall and try to empty your mind of thoughts.