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Comment by csomar | Hacker News Reader

Not sure if Sarcasm. Drinking salty/sugary water will actually dehydrate you.

Not true for sugar:

": Our findings agree with the long held notion that each gram of glycogen is stored in human muscle with at least 3 g of water. Higher ratios are possible (e.g., during REHFULL) likely due to water storage not bound to glycogen. "

If you want to store extra water for short periods drink/eat carbs

https://pubmed.ncbi.nlm.nih.gov/25911631/

starch can also stimulate the uptake of water in your small intestine. Oral Rehydration Salts combine some dextrose and salts to mix into a liter of water. When properly mixed the salts are in a homeostatic quantity and won’t affect the salt balance of existing tissue. So you can drink them to recover from severe dehydration without risking hyponatremia.

This is going to sound like a Brawndo ad, but you need electrolytes to stay hydrated.

You need to replace the salts in your body if you're drinking large amounts of water. Sodium and potassium are what signal muscles to fire. If you drink excessive amounts of water without supplementing electrolytes, you end up with water toxicity, which can be fatal.

Sports drinks are generally water with sodium chloride and potassium chloride added, often with sugar as well. Trust me, if you're sweating a lot and drinking a lot of water, you need a source of the appropriate salts.

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