I used to race a few years ago, I did road, track and crit racing, and have the scars to prove it, I pulled my left foot one day in training on the track and basically flipped myself arse up, it didn't end pretty (our velendrome is 2 coat seal/bitumen), I ended up with my left elbow ground down to the bone and over 20 smaller wounds across the rest of my body. But I do miss doing it, work in the last few years hasn't allowed much time for training, I rarely see home in daylight during the week and on the weekends I'm usually busy around the house or with my bike.