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Would breathing cause you to lose or gain weight?

Updated: 8/18/2019
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13y ago

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No, you won't gain or lose any weight at all. This is because as you inhale air, more mass enters your body (the mass of the air, which is now in your lungs), but your body expands a bit, thus taking up more space and increasing the buoyancy force of your body, the exact amount that the extra mass in your lungs increases gravity.

this is because air is the fluid that we are in and so its own mass is negated by its own buoyancy, whether it is in our lungs or not.

Now when we breathe air when in a fluid other then air we see that the weight does change. Like a Scuba diver underwater. If they take a lung full of air under water (from an air tank) they become lighter, and when they exhale that air, they become heavier.

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13y ago
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Q: Would breathing cause you to lose or gain weight?
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