I went to the gym to run 800's on the tm. I started out with a 1.5 mile warmup. During the warmup, I knew this workout wasn't going to go well. I managed 3 800's with a quarter mile jog in between and then I needed to be done. I don't know if it was the atmosphere, heater blowing on me, or if I was just tired, but that tm sucked the life out of me today. Rest tomorrow.