First postgrad run today and reality has well and truly dawned. Had grand plans for run around the forest park and thought it would be easier than my usual hillier route plus shadier and cooler but right from the start I struggled. My antihistamine didn't seem to be working, making breathing through my nose impossible and my breathing was all over the place. Managed 4.1 km in 29.30 ( stopped 30 sec before the end) so the dream of running 5 km seems fairly dim and distant at this point!
Valuable lesson learned - graduation is not the end - just the end of the beginning.