No, it is not.
Unless the person has been exercising
everyone and everything breaths heavy in their sleep
every human being breathe they do not urden
No. Human eyes are used for sight and lungs are used to breathe.
No, a normal human would not be able to float in mercury. Mercury is about 13.6 times denser than water, making it extremely dense and heavy. The human body would sink in mercury due to its high density.
Uhh, human and animal life?
Platypuses do not breathe fire. They are normal, air-breathing mammals.
because we are human beings
No, they breathe "Their own scent". This is what makes them Badass.
so that we can breathe and human and animals can have it get in there longs to help them breathe
he can not breathe .
it was as heavy as a normal brick
The lungs expand to take in more air while you breathe heavy and breathing more then normal day-to-day things like cleaning the house washing the dashes etc.