As you may have known, your brain works in a complicated manner. The left portion of your brain controls the actions and movement of the right part of your body while the right portion of your brain controls that movement of the left part of your body. Thus, it may be possible that the side of your brain which controls you dominant hand is more used than the other side. So, if you use your non-dominant hand into doing some of your daily activities, would it better your brains performance?
If you are a right handed person, then most of the time you are stimulating the left part of your brain. Now, if you use your left hand in doing certain tasks, then you are able to stimulate the right side of your brain as well. By doing so, you are awakening the part of your mental faculties that is intuitive and creative. On the other hand, if you are a left handed person, and you use you right hand in doing simple tasks, then you are stimulating the side of your brain that is rational and organized.
This idea is supported by Tony Buzan, the author of a book entitled Using Both Sides of the Brain. According to him, doing simple exercises or cross-trainings like this bring in...