Hey so i have a question. I'm in high school and I am a sprinter for track. I have a treadmill at home and i want to practice sprinting workouts on the treadmill because this year im going to be running the 4x2 and the 400m dash a lot. So I'm wondering if anyone could give me some speed workouts for the treadmill?? I'm also wondering how fast i should run on the treadmill?? Help please? Thanks! 