Maybe we can just meet for coffee while we talk about being old and getting injured easily. I'm taking tomorrow off to nurse my left calf tweak. It'll heal quickly I'm sure but before I run on it I want to know what I did so that I don't go right out and reproduce the injury. Good idea to rest the back - not bad timing all in all. You have time to get back into it and a couple days off after your hard several weeks might actually benefit your legs.