Boosting your gray matter isn't as hard as you think -- no matter what your age. While scientists once believed the brain stopped developing new neural connections as we got older, research over the past two decades shows the brain's capacity for learning new things and retaining memories has nothing to do with age. Rather, the brain is plastic, always able to make new connections. Even better news is that boosting brain power doesn't mean you need to sign up for advanced calculus (that is, unless you want to, of course.) What works just as well are simple lifestyle changes and enhancements. Your brain will thank you -- well into old age.