There's no room for the characters to breathe naturally.

Most people breathe naturally, they don't struggle for air.

The illusion lasted only a split second, and then the waiting man was breathing naturally again.

There is another engine, a 168-horsepower 2.4-liter 5-cylinder that breathes naturally (without the turbo).

Forcing herself to breathe naturally, she walked across the platform, stopping a few feet behind the canvas.

Breathe naturally: the gas bottle in the suit did the rest.

He'd been breathing naturally, but on this inhalation, he just didn't stop.

It welcomed him, gently, as if he quite naturally breathed water, like a fish.

He waited, breathing naturally, and suddenly it came to him.

It was hard to breathe naturally and easily after that swift dash, but somehow he did it.