So, I have decided to not volunteer this weekend. I'm upset, but likening it to backing off of a climb. Thing is, the leader wanted people to guarantee 100% commitment, and I can't do that. I did part of the route this Sunday with 4 others, and only made it through 1.5-2 hours. My hand hurting was the biggest thing, but it also didn't help that we never stopped. These other people did not need to eat, nor really drink. I'm drinking constantly from my watercarrierthingie, and ate a cliff bar, and I think maybe one of them had a sip from their water bottle. That told me a lot. I accept these limitations of myself most of the time, but sometimes it's really frustrating, like now. But it feels like the best thing to do to back out, no matter how much I hate the idea.
So now I have a weekend free, and will help a friend who's moving, and maybe even paint some of my ceilings to start making it look like MY home.