To boost your brainpower, and slow age-related mental decline, spend 2 hours a week texting friends and learning new things. Mayo Clinic research found staying socially active and discovering new information can reduce mental slowdown by 42%. Because it strengthens the area of the brain linked to long-term memory storage. It’s the same benefit you get from reading for a-half hour a day. The more you challenge your gray matter, the slower it’ll age. And it doesn’t matter if your brain gets a workout online or in real life.