Hydration and electrolytes

Your base water goal is about 2.5 liters, and TrueBurn nudges it up on higher-activity days. Caloric drinks you log count toward it automatically.

Water alone is not the whole story. Sodium controls fluid balance and is the main thing lost in sweat. Potassium supports muscle and heart rhythm. Magnesium powers hundreds of processes and many people run low. A proper electrolyte source covers all three. Salt in water covers only sodium.