Has anyone out there completed a thru-hike with less than good physical condition of they're legs? I have old injuries and I am not an experienced hiker, but I have been seriously planing to hike the trail for over 5 years now. I was planing on '09 when all my kids were graduated and all, but it snuck up on me and then I was like, fine I'll make it 10, now I am afraid, if this was the year I was planning to go, and now I am not prepared and putting it of to next year... ???? Thats beside the point I started to ask about, physically, legs, do they get stronger as you go?