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kjhg
breathe heavily = gasp, huffing and puffing, breathing, labored breathing, hyperventilation
because of oxygen,nitrogen
Pant.
I don't really know
Frogs can breathe through their skin, which allows them to breathe underwater for long periods of time. They also have lungs, allowing them to perform strenuous activities in water.
no
to.pant.
exerise every morning
Jesse breathed heavily after running around the bases>
During this maneuver, a person performs the "breathe-in-bear-down" movement that is automatically performed during strenuous exercise
exerise is the best way