Today the initial intention was to run 90 minutes home from work. I realized quite late I was out the office tomorrow so couldn't run home as I needed my laptop.
Finally got home and headed out about 11pm for at least a half hour.
I use a saying from one of the faster American marathoners when it comes to these sort of days. Get out the door and if you still feel awful after 15 minutes call it.
15 minutes later my stomach felt horrendous and I'd put my foot in a pothole. Run called.
Back to the drawing board again tomorrow.