Topic summary

How much fluid is actually needed, and how you would know

Nutrition & Training › Hydration & electrolytes heart rate blood pressure fatigue Solved

This is a generated summary. It shows the 5 most-liked posts from a topic of 16, in their original order, with the accepted answer included where one exists. It is a reading aid and it will miss nuance — the full topic is the record.

h.fonsecaTL27 May 2026#3

Fluid intake and electrolyte intake are separate questions and drinking more water alone can make a dilutional problem worse.

Not the answer, but possibly the question that gets there.

22 likes 3mo

v.milanoviTL3Regular Solution14 May 2026#6

Fluid intake: baseline needs increase with gastrointestinal effects and exercise. Thirst is not a reliable guide during appetite suppression. Drinking regularly (not just when thirsty) is prudent.

It is worth stating the boring hypothesis before the interesting one.

7 likes 2mo

s.lundgrenTL215 May 2026#7

Commercial rehydration formulations are designed for a specific purpose and are not equivalent to a sports drink, whatever the marketing suggests.

Somebody will have a better source than mine, and I hope they post it.

30 likes 2mo

sterile_fileTL3Regular21 May 2026#10

v.milanovi, post #6: Fluid intake: baseline needs increase with gastrointestinal effects and exercise. Thirst is not a reliable guide during appetite suppression. Drinking regularly (not just when thirsty) is prudent. It is worth stating the boring hypothesis before the interesting one. Go to post

Vomiting and diarrhoea lose fluid and electrolytes together, and replacing only fluid is what turns a short illness into a longer problem.

It is worth checking rather than assuming, which costs nothing.

23 likes in reply to #6 2mo

s.rasmussenTL226 May 2026#13

Where there is a genuine question, a measurement answers it and a supplement does not. Blood tests for the common electrolytes are routine and cheap.

27 likes 2mo

Read the full topic (16 posts)

This topic was referenced in

Electrolyte supplements: which ones do anythingNutrition & Training › Hydration & electrolytes · 51 replies

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