Managed to finish all of it but I had some problems at the end when I went on the final brisk walk. Very sharp pain in the left side where the heart is, it hasn't happened to me before and to be honest it gave me a bit of a fright. Do you think I should be worried? Did anyone else experience something similar?
Also was thinking to have a go and have a 5 min start-up walk and then run until the final brisk walk.
Did anyone else tried it?