Hard work this morning

It should have been so easy. A 'quick' half marathon loop via Blacka Moor which I've run many times before. It was hard work within the first 100m and it didn't get any easier despite walking far more than I should have needed too. Being objective though, I suppose that I can accept that:

• I did swim quickly yesterday
• This is the furthest I've tried to run in a some months
• Circuit class was tiring after a few week's break and so leg muscles will be tired

So now I need to rest and do some stretches and rolling to encourage recovery and get rid of some irritating muscle knots.