Scientists are still trying to unravel the many mysteries of the brain. But although there is still a lot to learn, several studies have indicated a few ways to help keep your thinking organ in shape, now and as you age.

1. Eat Your Brain Food

A diet of junk food can also junk up your brain. Fake “foods” like trans fats can negatively affect the brain's synapses. But a balanced diet rich in omega-3 fatty acids can give the synapses a boost and help fight against mental disorders from depression to dementia.

2. Hit the Gym

Since exercise is a mild stressor to your body, eating up the energy needed by your brain, it triggers the release of chemicals called growth factors that make the brain's neurons stronger and healthier. Half an hour every other day will do it, according to experts.

3. Mind Benders

Give your brain a workout, too, with brainteasers, crossword puzzles and memory games. Studies have shown that using these tools to stay mentally active can reduce the risks of developing dementia by building and maintaining a reserve of stimulation in your brain.

4. Memory Tricks

Keeping information stored in your memory banks and retaining that memory with age may also be a simple matter of mind control. Confidence in your cognitive abilities could actually affect how well your memory functions, particularly for the elderly.

5. Give it a Rest

Sleep gives your brain a chance to replay the memories of the day and consolidate them for long-term storage. One study suggested that the brain can do its reviewing much faster when you're asleep than when you're wide awake.