What is remove from the body when we breath out?
We give off carbon when we exhale.
So they can hold their breath longer. By hyperventilating they remove excess CO2 in their body, then when they take a deep breath, they are able to have more oxygen in their body, thus being able to hold their breath longer. It can be dangerous because breathing is regulated by the level of CO2 in our body, and when too much is removed, the body doesn't know when breathe again. http://www.deep-six.com/page73.htm
When you hold your breath for ten seconds and then breath for a minute after that why does your breathing rate increase?
Hey I like your question! the answer is no. Your body atomaticaly know's to breath. When you think about breathing you sit there and go In... Out... In... Out.... and so on. But when you're sleeping, or doing anything else your body just know's that it's supposed to breath =D Hope that answers your question!