Magnesium is essential for the proper functioning of muscles, which work by contracting and relaxing. This essential mineral is needed for the relaxation phase and when levels are low, muscle cramps commonly occur. If you suffer from menstrual cramps, it’s definitely worth getting some extra magnesium into your diet. Increase your intake of leafy greens, nuts, seeds, wholegrains, beans and lentils and choose a supplement that contains 200mg magnesium in a powdered glycinate form for an extra boost.