After not struggling with stamina so far I was expecting W4R3 to be OK. I'd taken advice to try running on a field to lighten the impact on my squiffy knee and this definitely worked almost immediately :-). I was not expecting it to be sooo much more knackering though! I guess it's due to the rain etc but it felt like I was running on sand. W5R1 tomorrow and I'm not sure what to do....pavement or bog basically?