My daughter is 13 years old and runs for her Junior High Cross-Country team. Running long distance seems more stressfull than softball or basketball. With proper liquids replenished does an increase in cortisone seem to be of proper advisement? After the event she is exhausted, as everyone else, and not completely wasted for the rest of the day.

The question is: Can running 1.5 miles be to much of a stressor?