Tonight when you're brushing your teeth, try using your non-dominant hand. You will probably feel (and look) goofy while doing this, but you will also be building new pathways in your brain. Using your non-dominant hand for simple tasks like brushing your teeth, opening doors and holding your phone may improve your overall memory. By working with the opposite hand, arm or leg you normally use, you're training your brain to use it's non-dominant side resulting in new synapses between hemispheres and increased brain function. With enough practice, you could even use your left hand, (or right hand if you're a lefty) just as well as your dominant hand. Cool, right?