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Science suggests that exercise may play a role in prevention of Alzheimer's by supporting circulation and blood flow to the brain. It also offers many benefits for people with Alzheimer's disease, including improved strength, endurance, and cardiovascular fitness. Exercise helps people with Alzheimer's disease preserve motor skills and improve balance, which in turn can help prevent serious injury from falls. Exercise also can increase energy, promote a normal day and night routine, and help to improve mood. Further, exercise increases circulation and can help improve mental clarity. Repetitive exercises--including walking, indoor bicycling, and activities such as folding laundry--may decrease anxiety in people with Alzheimer's disease because they don't have to make decisions about the activity or remember what to do next.