Breathe in breathe out

by Spammers
Tags: breathe
Spammers is offline
May12-05, 04:49 AM
P: 11
When we do somethin heavy, and repeatedly, we usually breathe in and out a lot, do you know biologically why ?
thanks you a lot
Phys.Org News Partner Biology news on
Citizen scientists match research tool when counting sharks
Microbes provide insights into evolution of human language
First sex determining genes appeared in mammals 180 million years ago
Daevren is offline
May12-05, 06:00 AM
P: 61
I am not sure if I understand your question because it is so obvious.

We need to breathe in oxygen so we can burn our food and get energy to get our muscles moving. The faster we breathe the more oxygen in our lungs, in our heart and then also in our muscles.
Monique is offline
May12-05, 07:49 AM
Sci Advisor
PF Gold
Monique's Avatar
P: 4,622
The lungs is the place where exchange of CO2 for O2 takes place. When you do heavy excersize, you will consume a lot of O2 and produce a lot of CO2. If you don't breathe in and out often enough, gas exchange will not take place efficiently since the lungs will become saturated with CO2 quicker. CO2 saturation in the blood sends a signal to the brain to take deeper and faster breathes.

Taking deep, fast breathes when this is not necessary will lead to a drop of CO2 levels in the blood, leading to a feeling of anxiety, which causes you to take even faster breathes, leading to hyperventilation. Breathing in a bag will cause you to breathe in more CO2, bringing blood CO2 levels to a normal level, so that hyperventilation will stop.

Daevren is offline
May12-05, 08:25 AM
P: 61

Breathe in breathe out

Ooh thats right, its more of an CO2 issue. My bad.
kalladin is offline
May13-05, 05:30 AM
P: 76
I don't know if this counts.. but when you breathe out CO2, the blood pH buffer system uses protons to make bicarbonate. This effectively decreases your blood pH. This is important because when you do rapid exercise, lactic acid production in the muscles may give you acidosis.

Register to reply

Related Discussions
The Air I Breathe General Discussion 1
Traffic cones and supermarket trollies breathe a sigh of relief Academic Guidance 1
How do we breathe? Biology 1
Humans Breathe Like Fish Engineering Systems & Design 9