Try your hand at these nine mental workouts to stay sharp and get the most out of your retirement years.

When you think about health, don’t forget your brain too. Vow to break from routine and focus on strengthening your body AND your mind. The idea of losing a step or two worries many of us, especially those who find themselves forgetting things more often than they like. In most cases, occasional lapses can be attributed to stress or multitasking, which can distract your brain, causing you to become unfocused and less productive.

There is good news. While there’s a lot we still don’t know about the brain, research has shown that the brain is like a muscle and can benefit from activities to boost its strength, flexibility, resilience and endurance. Take a look at some simple and inexpensive ways to train your brain. Proactive measures may improve memory, creativity, attention span, problem-solving and, perhaps best of all, support a long, happy and healthy retirement.

Sleep deprivation impairs quality and accuracy of work (31%), clear thinking or judgment (31%) and memory of important details (30%).

-Source: Better Sleep Council study

1. New Territory: Clear more neural pathways by learning a new language, instrument, skill or hobby. The challenge of the unknown boosts brain resilience, as well as memory retention, coordination and high-level thinking.
2. Purposeful Mindset: Build endurance and resilience by defining your life’s purpose. A reason to wake up every morning helps you transition when life changes.
3. Healthy Habits: Promote a healthy body and brain through diet and physical exercise, which increases blood flow to the brain, reduces stress, stimulates adaptive capabilities and helps you focus. Aerobic exercise just twice a week could lower your risk of Alzheimer’s by 60%. Bonus: A healthier body means you could stave off use of medications that could dull cognition.
4. Social Circles: A meaningful social life, including volunteering, improves executive function and memory. Social interaction means more engagement and lower risk of cognitive impairments.
5. Restorative Sleep: Sleep restores the mind when overwhelmed, rebuilds and repairs neuron pathways, reduces stress, and helps create long-term memories. Learn good sleep habits as well as de-stressing techniques that work for you, such as deep breathing or spending time with family and friends.
6. Lifelong Learning: While a higher education is the strongest predictor of greater mental capacity, memory and thinking skills in later years, a formal education may not be necessary. A lifelong habit of learning and engaging in mentally challenging activities benefits memory as well.
7. Complex Thinking: Jobs that involve complex, detailed work carry a lower risk of memory loss than professions that are less intellectually demanding.
8. Positivity: Starting your day with a mental accounting of things to be grateful for contributes to brain health and performance. Reframing events with positive thinking increases adaptability and resilience as well.
9. Tranquility: Silence digital distractions in favor of a good book, meditation, journaling or some other relaxing activity to help focus your mind and improve concentration.

Sources: Annals of Medicine, 2015; MacArthur Foundation Study on Successful Aging; Baltimore Experience Corps