As physical exercise strengthens your body, exercising your mind strengthens your brain. I like to refer to this as brain-ercise or simply, mental gymnastics. We should all try to engage ourselves in small activities such as Sudoku, puzzles, drawing, and math quizzes as all these stimulate the brain, helping to create and maintain important neuronal connections critical to cognitive abilities.
Now, our first activity for Mental Monday...Write with the opposite of your dominant hand. It may be difficult initially, but with a little practice and some neuronal connections, you will get the hang of it.