If matter can only change form through physical and chemical changes, where does all the matter we get rid of when losing weight end up in?

Question

If matter can only change form through physical and chemical changes, where does all the matter we get rid of when losing weight end up in?

In: 65

Answer 1

Your body is warm because of constant chemical reactions not unlike a fire. Some of the stored energy (matter) is converted into waste (poop, urine, sweat and exhaled CO2), some of it is reused to repair muscle cells, etc. And the rest is converted to heat.