oxygen debt

They often strike runners who start a race too fast and go into oxygen debt or ones whose breathing is affected by tenseness.

Rowers struggle to compare the whole-body pain of oxygen debt with anything else they've experienced in sports.

At last my lungs started to overcome my oxygen debt, and everything began to calm down.

He let the oxygen debt build up red in her face and then released her.

I'd reach anaerobic, I'd go very quickly into oxygen debt.

The method is legal and fast, though it creates oxygen debt sooner than normal.

Because she could breathe deeply, she could cope with her body's oxygen debt.

It also moderately increases heart rate and stroke volume (oxygen debt).

They didn't seem to notice the cold and certainly weren't in oxygen debt.

This is when it is 'out of breath', and is 'paying off' its oxygen debt.