Indian run in class

Probably because of yesterday's 5 mile run, plus shallow sleep last night, I am so tired today that I could not run with the group to finish 2 set of 4 laps Indian run. I run 3 laps with the group for the first set and stepped out to walk and jog myself. I was half lap late to finish the first set. The second set I stepped out as the beginning of the 3rd lap and finished it my self. I feel changing speed is very difficult to keep on compare to steady speed run. I got fatigue easily when changing speed up and down for the same distance running.
After that each of use run one lap at most effort. I could not finish at high speed of the whole lap and run fast for the first 200m and slow for the rest to finish. Totally 9 laps today.