The article provides 4 tips for maintaining a healthy brain: 1) Stay mentally alert by doing puzzles and problem-solving activities; 2) Exercise daily to increase blood flow and stimulate new brain cell growth; 3) Remain socially involved by joining clubs or classes; 4) Eat a healthy diet of fruits and vegetables high in antioxidants while limiting fat and cholesterol. Following these tips can help keep one's brain functioning well as they age.