A good helmet should prevent or at least mitigate any concussion from a beginner type of fall. Do you ride a bike? I would worry much more about clocking my head on a curb even with a helment.
Some bookmakers (Pinnacle, Sbobet, ibcbet etc.) do just that and their odds are controlled by the amount of money being bet on either side of the handicap, but it's a completely different model and most bookmakers don't have the liquidity to do this.
I worked as a trader for a UK based bookmaker and in reality it wasn't like that. You were betting against the house and it was very rare for us to make money on any outcome.
>I had to turn them up so high when outside with normal street noise that they gave me a pretty terrible headache.
You have to be really careful doing that. It's very easy to screw up your ears with bone conduction headphones if you try to drown out background noise by increasing the volume.
