Keeping fit, learning new things to stimulate your mind and staying in touch with friends and family all help to reduce your risk. If you don’t use it you lose it. There may also be a benefit in exercises that require more mind-body coordination, such as t’ai chi or yoga, and exercising outdoors – we make vitamin D in the presence of sunlight. These activities also help to reduce stress, which is another prevention step in the right direction, as is keeping your blood pressure down.