My comment about genetic makeup of fast twitch to slow twitch was meant to address the OP's statement "to be a sprinter you have to have a high proportion of fast twitch muscle fibres, and at the moment, I am lacking that...but I've not even been cycling for a year yet, and I know I can build on that" - not anything Baby Puke or Velocirapture had said. As for "training advice", my words were meant to be more of encouragement, support, and respect than specific training advice on track sprinting (of which I have only "trolling" peripheral knowledge and zero actual experience). I identified with her liking and wanting to be a better sprinter despite not having the classic "look".