<span>Metals tend to lose electrons and form electro-positive ions / cations.</span>
Our blood have a pH around the 7.0, when we hold the breath our cells still breathing, and the release

, this compound react with water (hydrolysis).

This compound formed by this reaction is acid, carbonic acid.
Them the pH will get lower them normal, and our buld send an action to our body, and this reaction will be the <span>breathing.</span>
Both processes use and make ATP