4 ms·
"For anyone coming straight to the comments looking for an answer to the question: it turns into CO2 (and a bit of water) and you breathe it out." That is why
by ransom1538 9y ago
"For anyone coming straight to the comments looking for an answer to the question: it turns into CO2 (and a bit of water) and you breathe it out."
That is why you weigh less when you wake up in the morning (pre-bathroom -/+ yes some sweat).
- kgabis 9y agoAlso water vapor from you breathing.
- killjoywashere 9y agoThe water is the vast majority of the overnight weight loss. pCO2 of 40 mmHg is normal. Resting tidal volume is 500-600 mL, and a breathing rate of 12-14 (officially 10-20, but really, more like 12-14). I'll let someone calculate the mass of CO2 exhaled in 8 hours.
- mikeash 9y agoThe article claims that 200 grams/day lost as carbon in CO2 is typical. (The oxygen comes from breathing in, so doesn't count for anything.) That implies that the amount lost in eight hours of sleep is somewhat less than 67 grams.