[Llamamoe]

- Get screened for sleep disordered breathing (apnea but also UARS, a lot of people negative for apnea have it)

- Get an OGTT and fasting insulin and see if your HOMA-IR, fasting glucose, or postload glucose aren't in prediabetic ranges.

- Check your iron, B9, B12, vitamin D levels and remember that a lot of people are basically functionally deficient when in the lower part of the reference range.

- Try keeping indoor CO2 levels low, breaking sitting up with brief physical activity, and consider light therapy glasses. Lack of all three substantially contributes to fatigue. Prolonged sitting straight up reduces brain volume over years.

Past that, do you have any symptoms, however small that could give a hint as to what might be going on? Dizzyness when getting up, cold hands and feet, gastrointestinal symptoms or excess gassiness, anything at all?