Fred......fatigue very likely is your body telling you what it needs first. i.e. rest.
You might be sleep deprived, or just exhausted and need rest before other improvements can occur.
My opinion comes from Quantum Touch which is a hands on therapy, the theory being that the body will tell me where to place my hands on a person's body.
example: say a guy has a sore shoulder and I begin applying the QT energy, and within a few minutes his pain will shift to the head...........THAT'S THE BODY SAYING THE HEAD NEEDS THERAPY (energy) FIRST...
OK? Make sense?
Best wishes