A'Jet, That is a lot of track sprinting for a rookie trackie. Track efforts are 100% everything you have and one effort is a lot. The high cadence fixed gear aspect make the effort, IMO, much more taxing on the cardio and neuromuscular systems. If one does a sprint tournament which is one flying 200 to qualify and 3 to 4, 3 lap match sprints culminating in a max effort flying 200, it is a monster workout.
You will need a bigger gear but you will also need to spin it at the same rate.
