My lungs wheezed and sucked, and I couldn't get air into them.

His lungs sucked at the fresh, tangy air.

For the third time, my lungs sucked in air.

With a guttural gasp, the fat man's body twitched, lungs sucking air desperately.

His huge lungs reflexively sucked in a volume of revitalizing oxygen.

Hearts already trembled in the reforming masses, lungs sucked air through growing throats.

He drove himself to even greater speed, legs pumping, his lungs sucking for air.

The air, though somewhat foul, ceased to be moist, and his grateful lungs sucked it in.

The air was agonizingly thin, and his lungs sucked frantically for oxygen that wasn't there.

Your lungs suck in more oxygen to fuel your muscles.