Walk down the sports drink aisle and read the labels. Almost every product on that shelf is built around two ingredients: sodium and sugar. Sodium because it is the electrolyte people have heard of. Sugar because it is cheap and it makes salt water taste like something.
Sweat does not contain one electrolyte. It contains five: sodium, potassium, chloride, magnesium and calcium. Each one leaves your body when you train, and each one does a job the others cannot do.
What each one does
Sodium drives fluid balance. It pulls water out of your gut and into your bloodstream, and you lose more of it than any other electrolyte, which is why the category built itself around it.
Potassium works on the other side of the cell membrane from sodium. It drives muscle contraction and nerve signaling, and the ratio between sodium and potassium in a formula matters as much as either number alone. We hold that ratio at roughly 2.4 to 1, calibrated for sweat replacement rather than the 1:1 ratio most consumer products default to, which is built for a keto diet, not a training session.
Chloride pairs with sodium to hold fluid in the right compartment in your body. It makes up half of table salt, and almost nobody doses it on purpose because it does not print well on a label. We list it because it is in the formula.
Magnesium supports muscle relaxation, protein synthesis and nerve function. It is also the mineral most athletes run short on, for reasons we cover in a separate article.
Calcium triggers the contraction itself. Without it, the signal from your nervous system arrives at the muscle and nothing happens. We dosed it at 100mg, a supporting number rather than a headline one.
Why most drinks stop at one
Formulating for five electrolytes in the right forms and ratios costs more than formulating for one. The finished product also tastes like salt instead of candy, which is a harder sell next to something sweetened to taste like fruit punch. Most of the category chose the cheaper path decades ago and never left it.
We built NOXE around all five, because that is what leaves your body during a lift, two classes and a session in the same day. Zero sugar, zero caffeine, nothing in the formula that exists to make the label look longer than it is.