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They relax. Except when you forcefully exhale, in which case the contracting abs help push the diaphragm up towards the chest cavity, and squeeze some extra air out of the lungs.

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16y ago

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Is muscles that cause you to breath involuntary or voluntary?

It is actually both.


What are the muscles involved when you take a deep breath?

The muscles of assisted inhalation are the external intercostal muscles, pectoral minor, and scalenes. The main muscle of respiration is the diaphragm.


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What happens when muscles are exercised without sufficient oxygen?

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The deep muscles of the thorax that promote inhaling are known as the diaphragm muscles. These are the muscles that are activated when a person has good posture and takes a deep breath.


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Swimming helps your lungs because to swim faster you hold your breath and by holding your breath often it makes your lungs stronger.


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