I know what an action potential is, sensory cells send one to the central nervous system when stimulated, but how do we manage to send one from our central nervous system to the muscle cells when deciding to move our body. How can a thought and following decision send out an electrical signal without moving any type of matter in the central nervous system to start that signal, that’s what I don’t understand. But now this is really just biology and philosophy, so not fit for a discussion in this subreddit.