They would have gotten bored just sleeping anyway. Zack's steady frown morphs into a pout--Ifrit he hates control exercises--but he lowers his arm anyway. It's hardly that Angeal's a threat, all things considered, but...

"Yes, sir."

But Zack is still fifteen, and the SOLDIER discipline hasn't taken all his teenager behavior out of him. Starting now, huh? Alright, fine, he'll start now. Without another word, he trots off, slowly picking up the pace. Whatever good mood lingered from the chase is long gone now, but he'll get the laps done.

He's stubborn enough for that, too.