Your whole roster runs on one formula. Their bodies don't.
A squad shares a water cooler and a Gatorade jug, but sweat sodium varies about tenfold between athletes. The salty sweater who cramps at the conference meet isn't unlucky — he's under-replacing, and no coach can eyeball who. Give every athlete their own number, and stop guessing as a team.
See the athlete calculator →The problem a team can't see.
Two runners on the same roster, same workout, same weather, can lose 200 vs 2,000 mg of sodium per litre of sweat. One generic bottle is too much for one and nowhere near enough for the other. It shows up as the athlete who fades in the last interval, the mid-season leg cramp, the kid who "just doesn't hydrate well" — all of it a math problem nobody measured.
What a team actually gets.
Their exact number
Each athlete runs the calculator once — their sodium, potassium and magnesium, on their own phone, no account.
A scale and a QR
Weigh in, train, weigh out — each athlete gets a precise number. Same setup as the Sweat Station studios use.
Anonymous team totals
A live report of sessions and liters replaced — no bodyweight ever stored, no individual data, just the team picture.
Legal, private, and coach-safe.
Educational only, not medical advice. If an athlete has high blood pressure, a cardiac or kidney condition, or is pregnant, they should consult a clinician before changing sodium intake.
Built with a distance athlete.
SweatSciences' distance science is written with Parker Warkentine, a collegiate distance runner — the same protocol, the same calculator, the same honest cost. If it's good enough to build a season around, it's good enough to hand your whole squad. See the distance work →
Start with one link.
Send your athletes the calculator, or set up a team sweat-test day.
The athlete calculator →