Work commitments meant that I had two days off between W4R2 and W4R3 - not that I think that's got anything to do with it.
Yesterday (Thursday) early evening I set off for my run. I do a 5k circuit following the C25K podcast for the first part and then just striding to music for the rest (a longer cool down if you like).
I've not experienced any real discomfort, other than laboured breathing, until now. Then yesterday, firstly my shins began to feel sore, which passed by the third walk phase. Then my calf muscles on my left leg were twinging on the final run (the second 5 mins).
I also noticed that I stumbled once during the second run. This is why I stopped jogging nearly ten years ago - the Dr (junior - recently started as a GP - even had to look up the nerve in his anatomy book) reckoned I'd got a trapped nerve in my lower back - as I'd tumbled over twice during jogs when there was no sensation in my left leg.
I really think the medical opinion was a bit OTT and wish I'd not given up jogging then, which is certainly one reason why I've added three stone since.
It could have just been one of those things, but it's an extra layer of trepidation for my next run (W5R1) on Saturday.