From this last November to April, I had been doing a pretty consistent, moderate to high milage schedule. A few weeks were about 30 miles, but most were in the 40s, 50s and even one or two in the 60s.
My body adapted. I didn't feel sore, achy, or even all that tired. I just did it, and it was good.
May and June kind ruined that for me, and now that I'm building miles again, it's getting tough. My muscles aren't all that pleased, and I'm feeling sore after runs that back in the day were pretty shrug worthy.
All part of the game, but still.... I would have thought that I'd have learned by now.