this post was submitted on 15 Jul 2026
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Mostly of the weight loss would be water.
No carbs plus alcohol and coffee is just diuretics
Plus anything that was in your intestines / bowels. There's no fibre in there at all.
I used to have to "make weight" and water and empty intestines are the short version of how it's done.
Oh hey that's the main way men get eating disorders!
Is that true? It wouldn't surprise me. When I was competing in that weight category sport I had a very skewed view of what I considered overweight (for me).
99% of the population would have considered me lean as fuck when I thought otherwise.
I was going to say, sounds like the shit the wrestlers used to do back in high school. Always seemed wildly unhealthy.
Imo weight class should be determined by an average of a bunch of weigh-ins for weeks or months before an event. Then, on the day of the event, allow some tolerance over the max weight but only if the average stays under. If the average creeps up into the tolerance zone, then they go up a weight class. Make the weight classes based on healthy habits rather than basically cheating in an unhealthy way to make weight a day before, then bulking back up to whatever weight for the actual fight.
Not that I have any stake in any of that, so my say isn't really relevant.
If you're only eating protein you don't need fiber.
Oh god your poor anal tract.
And your brain won't work because it requires at least 110 grams of carbs to function normally. Then you might start saying things like "if you're only eating protein you don't need fibre"
Gluconeogenesis is a thing. So while correct, it doesn't have to be dietary carbs.
Fair enough, that being said, eating exclusively protein is still likely to result in death from nutrient deficiency, kidney overload, protein poisoning, the list goes on.
But thats not as funny.
Though a fruit only diet, that's funny.
If you lose more than water weight in 3 days, it's probably due to traumatic illness or amputation.
Or a change in plans for space flight!
The avg person expending 2000 Calories a day means an ~850 Calorie deficit. 2550 deficit over the course of 3days. That allows about 3lbs of muscle (700C) loss or almost 1lb of fat (3000-3500C)loss.
Up the calories expended via being active and you could reach the 5lb goal. With such severe caloric deficit nost of the weight loss would be muscle unfortunately.
Isn't there enough protein in that diet to maintain the muscle?
If caloric intake was higher sure. Muscle breakdown is easier than fat so is a prime target in starvation diets to get energy. Results in long-lasting problems for people who have experienced famine or eating disorders. More moderate caloric deficits are healthier for a reason but obviously takes longer to lose weight.
There's a lot of variability in nutrition that can impact things but generally protein in the diet helps maintain and grow muscle but doesn't affect that when your body is starving for energy muscle tends to go more than fat.
Nutritional fads including the current lots of protein one are likely bunk or only for certain lifestyles.
I'm not familiar with this so am interested; presumably there's a calorie deficit where more fat is consumed than muscle? Where does it switch?
It is complex, precise dietary requirements vary person to person (even mouse to mouse but less for lab strains). As a generality women have lower caloric requirements, men higher. Age, height, weight, activity level, genetics, etc all have impacts.
The timeline of caloric restriction matters. Muscle breakdown occurs first because muscles store glycogen which is a much faster energy source than fat. Fat breakdown can go on for longer as it has a higher density of energy. Simple short-term reduction in calories thus results in muscle before fat. Higher protein intake mitigates or prevents muscle loss in longer-term diets compared to lower protein intake as the muscle cells are used to process/use the protein. Exercise is the best at keeping or growing muscle as it turns them from energy providers to energy users.
Resistance training. When on a calorie deficit while doing weight training, you will lose less muscle. You'll still lose some, but your body will try to rebuild the muscle using proteins and stored nutrients.