What was the worst class P.E. exercise that everyone had to go through?

When I was in high school in gym glass we had to do a bunch of warm up exercises and then we all had to run or jog around the gym for 5 mins in the winter or when it was raining. In the summer and early fall when there was frost but no snow we were required to run down to the field which was like 4 blocks away from the gym. At the end of class each day the teacher would always pick a student or two who did the best in class that day and allow them to ride her tandem bike back up to the school while everyone else including the teacher would walk back and carry the gym supplies back to the gym. Terrible I hated it always.