I did mile repeats yesterday and I was still really struggling, and it wasn't even hot. I don't know if I maybe still have a pocket of sinus infection from that cold (it does seem like it sometimes), or if it was the residuals from all the decongestants I had to take over the last couple of weeks, or what, but I could only manage 8:30 miles over the repeats, and I had to walk the WHOLE recovery intervals to keep my HR in the range I wanted. Hopefully next time will be better ... but it's supposed to get really hot tomorrow and stay that way all week.