Question

How does your brain detect when you should not hold your breath any longer and you must start breathing again? What signals might stimulate your brain to make you start breathing again even though you are trying to hold your breath?​

Answer 1

Answer: Signals from the body

Explanation: Your brain constantly gets signals from your body which detect the amount of oxygen and carbon dioxide in your blood. Your brain will send signals to the muscles involved in breathing and adjust your breathing rate depending on how active you are.