Oxidise 10 kg of fat and 8.4 kg of it is exhaled as carbon dioxide. Eccrine sweat is water, sodium and chloride — lipid is not a meaningful constituent. You cannot sweat out something that is not in the sweat.
The famous 30% metabolism boost works out to about 24 calories, and two later labs could not reproduce it at all. What two randomised trials do support is duller and more useful: a glass before meals, for a couple of pounds over twelve weeks.
By volume, yes — that is chemistry. But in a 12-week trial people gained about 2.6 lb of lean mass while losing up to 7 lb of fat, so their weight went down, not flat. And the density constant everyone quotes was measured in rabbits and dogs.
The only randomised trial of a corset for weight control watched compliance fall from 100% to 10% in nine months — the authors said it 'could therefore not be evaluated.' There is no mechanism, and the one measured effect of abdominal compression is worse reflux.
Cold exposure does raise the calories you burn, and over weeks of daily cold air one study trimmed fat mass slightly. But the research used hours of cool air, not a three-minute plunge — and no study shows a cold plunge takes fat off.
If you’ve been training hard, eating well, and still watching belly fat…
You know the routine: hard session, decent dinner, a couple more messages…
A randomised trial in 120 older adults found a year of aerobic exercise grew part of the hippocampus by about 2%; memory improved as much in the stretching group. The 'four times faster' figure comes from mouse cells in a dish, and the phrase does not appear anywhere in the paper it is credited to. It entered at the press release.
A 2026 review found no randomised trial of a tea sold for detox or weight loss, and neither did we. The mechanism is a laxative, and even four to six litres of diarrhoea cuts calorie absorption by only about 12%. The liver damage, though, is documented.
The checklist this page always promised, finally on the page. It sorts your answers into what the ECSS/ACSM consensus says must be excluded first — energy intake, iron, thyroid, infection, mood — and refuses to give you a score, because that consensus found no marker good enough to be generally accepted.