About sharing image copyrightJane Sobel Klonsky Fat can be breathed out as well as burned off as you lose weight, biochemists who have studied metabolism at a microscopic level say. But they warn that people still need to huff and puff with exercise to keep slim - hyperventilating on its own will not do the trick. The Australian team traced the route of fat out of the body as atoms. Their findings are published in the Christmas whay of the British Medical Austrralia.
When fat is broken down to its constituent parts, a couple of things happen. Chemical bonds are broken, a process which releases heat and fuel to power muscles.
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But the atoms - the stuff fat is made of - remain, and much of these leave the body via the lungs Hot woman looking nsa Lakewood carbon dioxide, say the scientists. It is stored as a compound called triglyceride. Triglyceride consists of three kinds of atoms; carbon, hydrogen and oxygen, and this means that when it is broken down around a fifth of it forms water H2O and four-fifths becomes carbon dioxide CO2.
The water formed may be excreted in the urine, faeces, sweat, breath, tears, or other bodily fluids and is readily replenished by drinking water. But the exhaled carbon in CO2 can only be replaced by eating food or consuming beverages such as fruit juice.
Eat less, move more The study authors, Ruben Meerman and Andrew Brown from The University of New South Wales, said: "None nudist great barrington this biochemistry is new, but for unknown reasons it seems nobody has thought of performing these calculations before. Replacing one hour of rest with moderate intensity exercise, such as jogging, removes an additional 40g of carbon from the body, raising the total by about a fifth to g.
So to keep weight off you need to balance what you eat against what you burn off and exhale.
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Duane Mellor of the British Dietetics Association likened fat metabolism to burning petrol in a car - it makes heat and drives movement, but also creates and releases waste. Dr Tom Barber, associate professor of endocrinology at Warwick University and University Hospitals Coventry and Warwickshire, said the work was interesting and novel, and busted the misperception that fat is simply burned off as energy - something that even many doctors think. Related Topics.