3k run / walk

It took me a good 15mins to be able to run yesterday as my back was really sore.  I was unable to manage the pain of the pound of my feet on the pavement jarring the small of my back.  

Not sure why my back was so painful 

I haven't really been very active for a week or so as I've had a summer cold so that may be a factor. As I haven't been doing much of anything my body may have got quite stiff?

Will do parkrun tomorrow and see how it goes