Magnesium

required for the transmission of nerve impulses, body temperature 
regulation, detoxification, energy production, and the formation of 
healthy bones and teeth.

Pumpkin seeds are an excellent source of magnesium. So are, flax 

and sunflower seeds, quinoa, mangoes, almonds.

Magnesium is a component of the plant pigment, chlorophyll. This 

means that all dark green leafy vegetables are particularly good 

sources of magnesium, like kale, swiss chard, arugula, and collards.