Crystal's breathing increased, the walls of the large office seeming far too confining.

Her breathing increased, and lines of pain creased her face.

He also noticed that the fellow's breathing had increased in rapidity, as though he were nervous or excited.

My jaw clenched and my breathing increased as I fought to not respond.

As he did so, his breathing increased until he was positively panting in surprise.

Deep breathing, he added, increases flow of blood to the chest cavity.

He released the metal buttons on his jeans, one by one, as her breathing increased.

Without her realizing it, her breathing increased, which encouraged him.

Her breathing would increase, and this last time she'd even begun moving her head back and forth on the pillows.

His breathing increased as he allowed the beverage to trickle down his throat.