Warning: This is super long one, so make a pot of tea, find a quiet spot to curl up, and get ready to change everything you thought you knew about your body’s energy. Today we’re getting more into root causes for physical tiredness, when your fuel tank feels like it’s never quite full, and empties a whole lot faster than it used to. We’ll start with the more well known, obvious causes, then wander our way through some things that may be new to you.