And she had been without oxygen for a while, but not long enough to do any damage.

Some people do it without oxygen, though that's not recommended.

Page had gone out five hours before - without oxygen.

No man could live for over four hours without oxygen.

We're going to take your mask off and see how you feel without oxygen, all right?

There was learning to control without oxygen before a second wind came.

But her brain had been without oxygen for 12 to 14 minutes.

Without enough oxygen, none of the cells in your body work as they should.

They were not meant to last this long, even in a place without oxygen.

Without oxygen in the water, the fish will die out eventually.