[hombre_fatal]

I've fluctuated about that much in 48 hours just going from eating a lot of food constantly -> fasting (no food, no water). Think about all the food and liquid you can pack into your stomach and intestines.

Seems crazy, but try it. I went from like 180lbs to low 160s. Of course, it comes back when you start eating and drinking again.

[_carl_jung]

This isn't what people typically mean when they talk about weight loss, though. Which is why normally you hear recommendations for measuring your weight at the same time every day with an assumption that your eating patterns are roughly constant.

[dragonelite]

This, i find i can lose like around 2.5kg by fasting 2 days 1.5kg is usually water weight and 0.5 kg feels like food mass and the other 0.5kg fat loss. The water and food mass weight will come back once you start eating again.

[jbarberu]

- "I managed to strip 60kg off my race car"

- "Wow, how did you manage that??"

- "I just emptied the gas tank!"