I fell off my bike today. As I was wheeling it off the road and onto the pavement, someone in a passing car rolled down the window and asked if I was alright. M

I fell off my bike today. As I was wheeling it off the road and onto the pavement, someone in a passing car rolled down the window and asked if I was alright. My answer was "Ask me in ten minutes". And yes, ten minutes later I was sat on the ground against a shop window with my vision gone dark, apparently as white as a sheet, and a lovely old lady calling an ambulance for me. It's funny how the body works - it gave me a couple of minutes of being able to get myself off an active road before initiating shock symptoms.