Water alone doesn't fully replace what you lose through sweat — sodium, potassium, magnesium, and calcium all play specific roles in hydration, muscle function, and recovery, and heavy sweating (through training, hot weather, or both) depletes them faster than plain water can replenish. This category covers dedicated electrolyte formulas built to close that gap.
What electrolytes actually do
Each of the core electrolytes has a distinct job: sodium helps pull water into cells and is the main driver of rehydration speed, potassium helps regulate fluid balance and prevents the "still thirsty" feeling despite drinking plenty of water, magnesium supports muscle function and can help reduce cramping, and calcium supports nerve and metabolic function. A well-formulated electrolyte product includes a meaningful dose of each, not just sodium alone (which is the cheapest to include, and the ingredient some budget products lean on to cut costs).
Why plain water isn't always enough
During intense or prolonged sweating, drinking water alone can actually dilute your body's remaining electrolyte concentration faster than it rehydrates you — this is part of why cramping and fatigue can persist even when you feel like you're drinking enough. Electrolyte formulas are designed to replace lost minerals alongside fluid, not just fluid on its own.
Who this is for
- Heavy sweaters, or anyone training in hot conditions
- Longer training sessions or endurance work, where fluid and mineral loss compounds over time
- Anyone prone to cramping during or after exercise
- Non-training use too — hangovers, hot weather, or general daily hydration in warmer months
How to use: mix with water as directed on the label — most electrolyte formulas are designed to be sipped throughout a session (intra-workout) rather than consumed all at once, though some (like recovery-focused formulas) are better taken post-training in one serving.
Training for longer sessions and need aminos alongside hydration? See our EAA's range — several formulas combine both in one product.
