Electrolytes are minerals that help your body function normally, from balancing fluids and supporting nerve function to keeping your muscles (including your heart) working properly. When you sweat, you lose some of them.
In recent years, electrolyte powders have gone mainstream. Added to your water, they are designed to replenish these important minerals. Once only found in athletes' cupboards, now there's an advert for them every second scroll on social media.
