HIGH5 ZERO is a light and refreshing sugar-free electrolyte drink with zero calories that makes it easy to stay hydrated throughout the day. When you sweat, you lose vital minerals so it’s important that they are replenished. With key electrolytes tablets (sodium potassium magnesium electrolytes) ZERO gives you what water can’t. The magnesium in ZERO contributes to electrolyte balance, whilst also supporting muscle protein synthesis. These hydration tablets with electrolytes are designed to be taken BEFORE, DURING and AFTER exercise and to rehydrate in hot weather. ZERO's scientific formula of electrolytes for water includes Vitamin C to support a healthy immune system, protect cells from oxidative stress and reduce tiredness and fatigue.