I'm taking gym this semester and I'm worried about how this could affect my training for cross country. 3-5 times per week, we do a 22 minute run. I realize this isn't much, but I'm wondering how this could affect my training. If I just jog the 22 minutes at about 9-10 minute pace, do you think this would be a helpful shakeout for my after-school practices? Gym class is 2 hours before my practice starts, by the way. Did anyone else do something like this in gym during high school? Do you think it helped or just tired you out for practice?