During summer you are more likely to experience headache because of magnesium shortfalls. Levels of this mineral plunge due to loss through sweat. The fix? Enjoy 1 1/2 cups of ice cream with 1/2 cup of chocolate chips or nuts. The yummy treat doesn't just deliver a dose of magnesium, ice cream's lactose increases the body's ability  to absorb magnesium for fast-acting pain relief.