Seeds are high in nourishing essential fats.

It may give you a short term boost, but it's quickly followed by a dip in energy, with anxiety and irritability.

Low levels of this vitamin can result in a flagging sex drive and reduced fertility.

A snack now prevents your blood sugar dropping.

This supplies its energy steadily so you don't get a surge of blood sugar, which is then stored as fat.

This will keep you going.