Keeping One’s Mind Sharp As One Ages: Learn to Play an Instrument!
Recent research suggests that there are two particularly good ways to keep your mind sharp in retirement. One isto learn a foreign language, and the other is to learn a musical instrument. The first method is fine as long as you have someone close to you who speaks that language, thus allowing you the opportunity to practice your skills. If not, a musical instrument might be preferable because it does not require that you have a partner, in order to practice.
This great article talks about the pros and cons of various instruments for new, lifelong learners.