I seem to have all the usual after effects from my run that I first suffered when I started running back in 2007. My legs, noticeably my quadriceps, hurt yesterday, and it seemed to get worse as the day went on - all that sitting at my desk and seizing up. Stairs also aggravated it a bit. Delayed Onset Muscle Soreness they call it. Sometimes it's lactic acid build up, but I'm pretty sure this one is just the sudden shock to my legs that they're working fast again. I expected it, it's my own fault for not running for so long. I'll just have to remember when I used to be able to complete half marathons and feel normal again 2 days later, when 10K runs were nothing and had no effect on me. I shall get there again. The good news is the knee feels exactly as it did before. I few twinges, but nothing major.
Second run will now take place tomorrow when my legs hopefully will be back to normal.