Magnesium is a mineral which typically comes from external sources such as a healthy diet including nuts, legumes, wholegrains, bananas and leafy green vegetables.

Magnesium deficiency can lead to symptoms such as bad headaches, muscle weakness, muscle spasms or cramping, stiffness or low energy.

This can be especially common in athletes or those who regularly participate in sport, and can be improved by eating a magnesium rich diet.