Inspired by that one scene from "Demon Slayer" where Tanjiro hones his lungpower by blowing into a gourd until it bursts.

While blowing bubble gum bubbles has allowed Chanticleer to improve his breath control, he's also looking to increase his lungpower. To do that, he needed to blow into something with a little more resistance, and that's where a bunch of unused weather balloons came in. Chanticleer's pushing his diaphragm and lungs more and more as the balloon becomes bigger and tighter due to the increasing air pressure within. With a little luck, he'll hold out until the balloon pops. Once he's had a few rounds with these five-foot balloons, he'll use larger balloons before moving on to inflating latex hot water bottles until they burst.

My Fandom page on Chanticleer, for context: https://theytpchannel.fandom.com/wi.....nticleer_Bluth
Chanticleer belongs to MGM.