Everything FitChef knows about hydration electrolytes.

Cold water sits in your stomach longer than warm water. The physiology is measured and direct: cold temperature suppresses gastric contractions, the rhythmic churning that pushes fluid toward your small intestine where absorption happens. At 2°C, those contractions slow and stay suppressed for over an hour. Warmer water moves through. Ice-cold water sits.

Sodium before exercise genuinely improves performance. Not in the theoretical, it-should-work-on-paper sense. In the measured, replicated, 14 to 26 percent longer before exhaustion sense. The numbers behind the pre-workout salt trend are real, and they're larger than most supplement ingredients can claim.

Carbonated water makes carbonic acid in your stomach, and acid near bones sounds like trouble. The proof seems obvious — cola drinkers show measurably lower bone density, and cola fizzes the same way your sparkling water does. Whether carbonated water reduces mineral absorption feels settled before you've looked at a single number.

The glass of water you've been avoiding during meals does exactly what you feared — it dilutes your stomach acid. For about three minutes.

The mechanism that made your scale spike this morning is the same one that made the first week of your diet feel so encouraging.

A puffier rest-day mirror is not a sign that recovery failed. It is proportional to how much work your muscles did.

You ate the banana. You drank the electrolyte water after your run. Someone at the gym said low potassium causes muscle cramps, and the advice was so universal you never questioned it. The cramps came back anyway. It wasn't that you took too little. It's that the question itself had two separate stories collapsed into one.

Two and a half kilos in seven days. Your tracking app drew a line straight down, and the number on the scale matched the effort you were putting in. Then week two arrived with 0.4 kilos, and week three barely moved the decimal.

Somewhere in the fitness world, there is supposedly a clean line. Below it, your muscles work fine. Above it, performance drops. The question is always the same: how much dehydration is too much?

Coffee goes in, more comes out, more out means less in. Caffeine pushes the bladder, the bladder dumps water, and three steps later the conclusion is dehydration. A chain so obvious it never seemed worth testing. The first two links hold. The third doesn't, and the reason is a number the body was keeping quiet.

Your metabolism responded to the act of raising the glass. Not to the water inside it.

Drinking pickle brine to stop a muscle cramp sounds like locker-room folklore, until a controlled trial measured it and cramp duration dropped by nearly half, resolved in 85 seconds. The electrolyte theory everyone reaches for has a problem: that amount of liquid takes roughly 30 minutes to leave the stomach. The pickle juice hadn't reached the stomach when the cramp was already gone.

The workout that left you drenched didn't outperform the one that left you dry.

Nobody ever sat down, measured how much water a healthy person actually needs, and arrived at eight.

Sweat measures the heat you're dumping, not the fat you're burning.