Salt can be found in every cell in our bodies. In an adult human there is a total of about 250 grammes (a cupful). Is it any wonder our tears and sweat are salty.

So that our bodies can function properly, salt is essential.

Exercise, in hot weather etc, we sweat and this depletes the body of salt, which must then be replaced. Most crucially, salt helps keep the balance of our bodily fluids, that carry nutrients and oxygen around our bodies.

When I was nursing, we nurses cried many salty tears when patients would not drink enough water. Working out the