Development of furnishings made of synthetic fibers and plastics made breathing more difficult during fires.

Furthermore, with an elevation of 2,285 m,(7,500 ft) the thin air makes breathing more difficult for both the drivers and their cars.

The pressure on your lower belly from both will make breathing more difficult, so eat only small amounts of these and other gas-forming foods.

This may be done to shrink cancers that make swallowing or breathing difficult or that are causing pain.

This may make breathing more difficult.

She found nothing useful, however, and the cloud of dust which she had stirred up made breathing more difficult than before.

Doctors say this isn't a good idea, because it bends the neck unnaturally and can make breathing more difficult.

I woke up on a Wednesday morning with my chest feeling tight, which made breathing a little difficult.

There is an oxygen mouthpiece next to every seat which I advise you to use if you feel breathing difficult.

Living with asthma is no easy task, and when you catch a cold, it can make breathing more difficult.