When I got to the gym this morning and started my warm up I noticed that even at 2 1/2 mph I was pretty tired. So I decided to do a four minute warm up and then weights today.
I think that was a good decision. I did about five or six minutes of running in the middle, but I couldn't go further. I also did 40 "sit ups" on an exercise ball - that's an all time record for me.
I don't feel completely exhausted now, and that makes me happy.
Hopefully tomorrow morning I'll be able to run the full three miles well. Sunday will be a break day.