>>20642421You can train yourself to get around that.
It comes with experience.
Given you are singing you are also putting in even more effort to breathe than the regular person when doing something exhaustive, so it's actually not going to tire you out as much.
The BIG issue is your lungs, training them is the thing that really makes the big difference. A good set of lungs will massively improve your overall fitness. Having shit lungs but muscles of the gods will horribly gimp your ability regardless of how capable those muscles are.
It's not just that, but also getting your lungs used to the fast movement of air which can dry the fuck out of them hard. Singers tubes adapt to the increased strain by producing more mucus than average (same with other high intensity exercising)
But even that's only half the battle. It's why singers regularly end up with fucked throats. (including in Hololive, happens every damn month it seems... Kanata... )