Magnesium was made to calm our episodes of insanity. First, the mineral can help lower your stress levels, keeping your body in a state of relative ease as you kick off yet another round of PMT-induced crankiness. Not getting enough magnesium may trigger migraine headaches and make you feel fatigued. (And almost seven out of 10 of us don’t get enough of the stuff. No wonder we’re cranky.) Just one cup of spinach provides 40 per cent of your daily needs – so try subbing it for lettuce on sandwiches and salads. (And now you have an excuse to indulge in as much spinach dip as you like when the monthly munchies take hold.