4 ms·

Just remember that only the C part makes you lighter as the O2 comes from the air. So based on that number it's 375g/day (edit: it's 273g)

• gpm 5y ago
  I get 273g/day? C is lighter than O. Also... this is a typical number for a typical lifestyle, I believe it can vary substantially if you exercise a lot. Also... I know nothing about wait loss, but surely a lot of the mass is in water?
  • nielsole 5y ago
    Thanks for pointing out that mistake. I think people also breath out quite a bit of water. So total weight loss from breathing will be bigger than the 273g
  • fidesomnes 5y ago
    Your body loses water every time you breathe. You lose about 1 cup of water each day, just from breathing.
  • Aerroon 5y ago
    As a sanity check: fat is around 9 kcal per gram. In a day you use around 2000 kcal of energy or 222 grams of fat. Protein and carbohydrates are around 4 kcal per gram. The numbers are in the right ballpark.
  • roelschroeven 5y ago
    > Also... I know nothing about wait loss, but surely a lot of the mass is in water? Not really. Yes, you loose water (and its weight) when you e.g. sweat a lot when exercising, but it gets replaced when you drink. More generally your body keeps the amount of water more or less at the same level through intake (drinking, but also water in food), urinating and sweating. There are short-term variations, but besides exceptional circumstances on a day-to-day basis the amount of water in your body should be pretty constant. Real weight loss is through loss of muscles (not preferable) or loss of fat.