The science of your sweat
An electrolyte mix matched to your sweat.
Two athletes can lose electrolytes at rates more than 200x apart! A LEVELEN sweat test finds your exact LEVEL, then we build your formula to match. No guessing, no generic scoop.
20+ yrsOf sweat research
Since 2012Built by physicians & scientists
PersonalizedEvery mix to your body's specific needs
Sharon Schmidt-Mongrain · Ironman World Champion, USA Triathlon National Champion
Built for athletes, and the nutritionists who fuel them
Sweat-testedNot estimated
Physician-foundedSports surgeon & researcher
Hand-mixedIn Philadelphia
Lab-analyzedHEAT Sport Sciences, PA
How it works
Test. Get your LEVEL. Fuel.
Three steps from a generic scoop to a formula built on your own physiology.
01
Take the sweat test
Wear the patch through one normal workout and mail it back postage-paid. No lab visit, no change to your routine.
02
Get your LEVEL
Your sweat test determines your LEVEL, based on how salty your sweat is. It comes down to your genes and what you're doing.
03
Fuel to your number
Drink the mix made for your LEVEL. The right electrolytes, carried by glucose so your body absorbs them quickly and efficiently.
The LEVELEN system
Your number is written in your sweat.
The saltier your sweat, the higher your LEVEL, and it's genetic, not a measure of how hard you train. The leading sports drink gives everyone the same low dose. We match yours to your sweat.
Find your LEVEL51,500 mg Na / L
41,200 mg Na / L
3900 mg Na / L
Leading sports drink80-450 mg Na / L
Your sweat test pinpoints your LEVEL. Your sweat rate sets how much you drink.
Shop
Get tested. Then fuel.
Every mix is made to your LEVEL. $75 a pouch, or subscribe and save 20%.
Why testing beats guessing
Every scoop on the shelf guesses at the average athlete.
How salty your sweat runs is genetic and can't be seen from the outside. Pair a heavy, salty sweater with an athlete who sweats little and loses little salt, and their total electrolyte loss can differ more than 200x. A single generic scoop can't serve both.
The sweat test determines what you lose in your sweat, and determines the optimal strategy to hydrate and fuel.
More than 200xRange in total electrolyte loss between athletes.
LEVEL = geneticsHow salty your sweat runs, not how hard you train.
Fully absorbedGlucose carries electrolytes efficiently into your blood. Electrolytes from zero-calorie and low-calorie drinks pass through and largely end up in the toilet.
Out in the world
Real athletes, fueled to their number.
Who's behind it
Built by the experts who study sweat.
Scientifically formulated to your Sweat Profile, backed by real lab analysis, and validated on the sports field.
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Founded by a sports surgeon and a professor/researcher who have spent their careers improving the performance and health of athletes.
Physician-founded
Sports medicine & research
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Your sweat patch is analyzed in a laboratory, not read off a survey. That analysis sets your LEVEL, 3 to 5.
Lab-analyzed
HEAT Sport Sciences, PA
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Every formula is hand-mixed clean in Philadelphia to the LEVEL your test calls for, with glucose to carry it in.
Made to your number
Hand-mixed since 2012