I had no horse!

That's how I felt on my planned 6 miles yesterday. It was supposed to be a tempo run, but after the 1st mile warm up and 2 at tempo, I was dying. Dead legs, felt like I was running in waist deep water. Decided to go out and back for a 4th mile and call it, but ended up doing a shorter loop that put me closer to 5 miles. It was 90 and high humidity, so some conditioning and better hydration are in order I think