Iron and calcium are the minerals that get the most attention, but magnesium is an under-appreciated nutritional powerhouse. Magnesium helps with muscle and nerve function, regulates blood pressure and supports the immune system. It’s also needed for the absorption of calcium. Fortunately, magnesium is found in a wide variety of foods, so it’s easy to up your daily intake. Here are 10 of the best foods that’ll boost your magnesium levels.