Your body isn’t the only thing that wears as you age — your mind also become more susceptible to Alzheimer’s and other degenerative diseases. But flexing your mental muscles on a regular basis can help you ward off those diseases. Boost your brainpower by eating a brain-healthy diet, hitting the dance floor or learning a new language — a recent study found evidence that being bilingual delays the onset of Alzheimer’s disease while also improving one’s ability to prioritize and multi-task.