Last updated: June 9, 2026
Short answer: A hard gi session costs you 1–2 liters of sweat and roughly 1,000–2,000mg of sodium per hour — more than almost any other sport per minute of work, because the gi traps heat. Water alone dilutes what's left. The protocol that works: 500mg sodium with 16–24oz of water 30–45 minutes pre-roll, another 500–1,000mg during or after long sessions, with potassium and magnesium amounts checked against the label; this is not a cramp-prevention protocol.
Why Grappling Drains Electrolytes Faster Than Almost Anything
Wrestling and BJJ research consistently shows among the highest sweat rates measured in sport — the combination of full-body isometric work, anaerobic bursts, and an insulating uniform. Sweat-rate studies in combat athletes report 1.0–2.5 liters per hour in hard training, and sodium concentration in sweat runs roughly 500–2,000mg per liter depending on the athlete. The "salty sweater" range is real — if your gi dries with white lines, that's you.
Three failure modes every grappler knows:
- The round-four gas-out — plasma volume drops, heart rate climbs for the same output.
- Night cramps after open mat — calves and feet; cramps can have multiple causes and do not establish a mineral deficiency.
- The foggy drive home — even 1–2% body-weight fluid loss measurably impairs reaction time and decision-making, which is most of what jiu-jitsu is.
The Math for a 90-Minute Session
- Sweat loss: 1.5–3.0L. Weigh yourself before and after — 1kg lost ≈ 1L of sweat.
- Sodium lost: 1,000–4,000mg depending on your sweat saltiness.
- What water alone does: contributes fluid, while electrolyte needs vary; drinking excessive fluid can be harmful, and symptoms need medical assessment.
The Protocol (What We Actually Do)
| When | What |
|---|---|
| 30–45 min pre-roll | 500mg sodium + potassium + magnesium in 16–24oz water |
| Rounds (60–90 min) | Water to thirst |
| Tournament / open mat / 2h+ | Second 500–1,000mg sodium dose between hard blocks |
| Evening after | Magnesium (check the labeled form and amount; sleep benefits are not established for this drink) |
Cutting weight? Rehydration after a cut is its own protocol — sodium FIRST, then volume. Talk to your coach or doctor, and never experiment on competition day.
Why We Built Electrodose for This
Electrodose was founded by two jiu-jitsu athletes — one a black belt — who got tired of choosing between salt water and sugar water. One scoop contains the labeled 1,000mg sodium from two sources, 200mg potassium citrate, and a 300mg tri-form magnesium complex, plus four disclosed cognitive ingredients — L-Tyrosine 1,250mg, Alpha-GPC 300mg, Rhodiola 200mg, L-Theanine 125mg — alongside the other labeled ingredients. Zero sugar and zero caffeine. Follow the current label directions rather than increasing servings for competition; ingredient studies do not establish improved composure from this formula. Full formula here.
That said: any properly dosed high-sodium mix (LMNT included) beats water alone for the hydration half. The nootropic half is what nothing else in the category covers.
FAQs
How much sodium do I need for BJJ?
About 500mg before a normal class; 1,000–2,000mg total across long sessions or tournaments, scaled to your sweat rate. Weigh yourself before and after training to learn it.
Should I drink electrolytes during rolling or before?
Before. Pre-loading 30–45 minutes out beats sipping mid-class — absorption takes time, and you can't drink much between rounds anyway.
Do electrolytes help with cramping in BJJ?
Exercise-associated cramps have multiple possible causes. The ingredient studies linked on our Science page do not establish that Electrodose prevents or treats cramps. Persistent or concerning symptoms should be assessed by a healthcare professional.
What about caffeine before evening class?
Caffeine at 7pm costs you sleep, and sleep is recovery. Electrodose is caffeine-free and lists L-Tyrosine and Alpha-GPC with their amounts; that does not establish improved alertness or sleep.
Is water enough for one-hour classes?
For light drilling, yes. For live rolling where you soak the gi, water alone replaces volume but not the sodium driving your nerve and muscle function.
Related: Electrolytes for Grapplers: protocols in depth · The Two-Scoop Protocol
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
