Where does the weight go once you lose it?
In: Biology
Your body breaks down stored energy (fats, carbohydrates, some protein) to release energy in the form of movement and heat. The weight you lose is the stored energy, which cannot be lost, only converted to another form of energy.
Primarily, energy goes to fuel metabolic reactions in your body and movement through your muscles, which both produce heat as a byproduct. Heat is mainly lost by sweating (evaporation), and through excretion of urine/faecal matter.
I’m not an expert but the body fat gets turned into triglycerides which is like the liquid form of solid fat and released from the fat storage cell into the bloodstream. Then the body can process that into usable energy in the mitochondria of other cells think of them as little bacterial sized engines. I don’t know the specific process to break apart the triglycerides but when the body breaks it up the remaining parts are water and carbon dioxide. So the actual weight comes out as pee, sweat, tears etc and your breath.
Essentially, the same place most energy sources that are mainly Hydrogen and Carbon go. They are turned into CO2, and Water, so sweat, urine, and breath.
Mostly you breathe it out as part of your normal respiration. Some of it will go out as waste in urine or fecal matter, but the vast majority is breathed out.
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