This is the only thing that really worries me as the walks get longer. In the grand scheme of things, my FMS is relatively mild, but it does mean that I sometimes need more time to recover from major activity, and when these walks get into high mileage on back to back days, I envision some issues with fatigue.
When I finally did get up and out the door today I was fine; my legs hurt a little and I was tired, but I wasn't exhausted, and after I stopped partway to eat a little something, I perked up and the last couple of miles weren't bad at all.
I dangled in front of me, like the proverbial carrot on a stick, a 30-40 mile bike ride followed by chili at Denny's as a reward for walking today. By the time I was done walking and geared up to ride, the wind had picked up, which sucked a little of the fun out of that, and then when I got to Denny's they were out of chili.
Since I did my two long days already, tomorrow may be a short 5 mile walk, or even a 4 mile in the morning followed by a 2-3 in the evening. I'll play it by ear...but I will walk. And dangit, Denny's better have chili tomorrow.