you first breath in and then you breath out
both you can start with breathing out or by breathing in
respiration happens inside the body and breathing happens outside the body
Your breathing becomes deeper and faster.
Hopefully, it continues.
It speeds up.
Your breathing speeds up when you exercise in order to get oxygen to your muscles and heart.
breathing
You hyperventilate.
It usually slows down
Your breathing can become laboured due to your smaller lung capacity in high altitudes.
If they are unconscious and breathing, nothing will happen. If they are unconscious and not breathing, they will die.
When breathing in, or inhaling, the diaphragm contracts, or tightens. When exhaling, or breathing out, the diaphragm expands, or loosens.