Two years ago I injured my back in Fierra at the Wc and it happened again this year. I'd warmed up for the quali really well and felt ready. I flashed the 1st bloc and then messed up the 2nd bloc, sat down for the 5min rest period and when I put my shoes on I felt something go in my back. I sarted to panic because I couldn't breathe deep and rotate to the right without lots of pain. I decided to just carry on and see if it got better. It didn't and I was unable to give 100% on the remaining blocs. I finished 28th climbing just 2 problems. I was very dissapointed because the blocs were perfect for me-crimpy and basic. My back is still painful but starting to ease. I have had back problems for a long time now and I am really lazy when it comes to back exercises but this has shown me just how important it is to train your whole body. The next WC is in 3 weeks so hopefully I'll be ready for it.