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When you lose fat, most of it leaves your body in a surprising way.
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About 84 percent leaves as carbon dioxide from your lungs.
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About 16 percent leaves as water, in urine, sweat and breath.
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Lose 10 kg of fat and you exhale about 8.4 kg as carbon dioxide.
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Fat never turns into muscle. You can lose one and build the other.
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Breathing faster won't help. Moving more and eating a bit less will.
Most of the fat you lose leaves your body as carbon dioxide when you breathe out. Here's the simple science, with the numbers from the BMJ study.
Tap below for the full page. Not medical advice; talk to your clinician about your care.