oh, and I will add to this - as individual muscles die and waste, the surrounding muscles have to work harder to compensate. So if a PALS attempts to continue doing tasks that they find very strenuous, or fatigue them a lot, they are probably overtaxing the muscles that are trying to compensate for ones that have failed. This will then weaken those muscles hastening progression.
This doesn't mean a PALS should go sit in a corner and do nothing!
But, eg Chris would sit fatigued for several days, then go out and spend 5 hours straight using a brush cutter. He would say he felt so good for it ... he would then be useless for the next few days and the depletion in his hand and arm strength would be noticeable. Maybe if he had gone out for half an hour or so every single day, just doing a bit he would have been far better off. But he would do nothing, or do ridiculous amounts, and each time the result was days of high fatigue and less use of muscles
