Mobility is key to your independence and even your overall health – and while nothing can improve it like regular physical activity, certain nutrients can also help. New research finds that 300 mg of magnesium per day can improve the ability to stand from a chair and even increase walking speed, at least in older women. Magnesium is critical to hundreds of functions in the body, including muscle, bone and nerves, so it’s no surprise that it can help keep you on your feet and moving. Since most people don’t get nearly enough of this essential mineral from diet, I recommend supplements. Avoid magnesium oxide, which can cause gas and diarrhea, and use magnesium glycinate instead. It’s gentler on your stomach and more easily used by your body.