Van, Arthur, and the other students kept running non-stop for a full half hour.
After half an hour, Nana also managed to finish her punishment: two thousand handstand push-ups.
Without giving Nana a chance to rest, Master Rock immediately ordered her to join Van and the others.
On the other side, the first-year students were still lying helpless on the ground due to the gravitational pressure.
"Keep trying, kids. If you don't, you'll stay lying there for the rest of class," Master Rock said as he continued to watch the first-year students.
"Are we just going to keep running like this endlessly?" Arthur asked in confusion, wiping away a bead of sweat forming on his forehead.
With physical abilities far beyond other kids his age, Arthur could run non-stop for several hours, but the gravity pressure on the field drained his energy much faster.
"Is this all you've got, mad dog?" Nana asked, running beside Arthur.