He tried to regulate his breathing, to ease the pressure on his chest.

She was recommended by doctors to take up sport to regulate her breathing.

He regulated his breathing to attain a more focused state of mind.

Kate felt the pain across her chest again and tried to regulate her breathing.

Rayford gently set down the radio and tried to regulate his breathing.

I had regulated my breathing and my hands did not shake as much.

His pulse was higher than it should have been, and he worked hard to regulate his breathing.

David was aware of his pulse and tried to regulate his breathing.

Taking out the mouthpiece, he said, "The key is to regulate your breathing.

Maya tried to regulate her breathing, to slow it down.