Magnesium does a lot for your body – but in the context of mental-well being, it plays a role in the production of serotonin, and deficiency can result in irritability, fatigue, and a predisposition to stress – not cool.

Women should aim for around 310 mg a day – and you can get this from supplements, but other sources include almonds (1/8th cup contains 70 mg), spinach (1/2 cup contains 78 mg), cashews (1/8 cup contains 74 mg) ans peanuts (1/2 cup contains 63 mg).

Recipe: Breakfast on-the-go Fruit & Nut Bar