someone explain fatigue to me like I have not read a paper in years

Trying to get a straight answer on this: someone explain fatigue to me like I have not read a paper in years.

On buying things to fix side effects, which I did extensively and would not do again.

The interventions that changed anything for me were all behavioural and free: smaller meals, eating slower, stopping food a few hours before sleep, more fibre and considerably more water. The things I bought did nothing I could detect, and I was motivated to detect something.

The other lever, which people forget, is time at dose. Holding rather than stepping is a legitimate plan and it fixed my tolerance where nothing else did.

The pattern almost everyone here describes, written out once so it can be linked.

A step up is followed by a rough window — commonly muscle cramps arriving the day after the shot and easing by day four, worst in the first fortnight, then flattening out. At a stable dose it usually settles further. Constipation and fatigue tend to track intake and fluid rather than the compound directly, which is why the unglamorous answers work.

What sits outside that pattern: severe pain, symptoms that appear from nowhere weeks into a stable dose, or anything getting worse rather than better over a month. None of that is a board question and none of us can answer it for you.

Hair shedding after significant weight loss is a telogen effect that follows the rate of loss. It is not specific to these compounds and it resolves.

Tell me where this is wrong. That is the useful part of posting it.