Challenging your brain is not only good for your cognitive health, but it can be a great way to relax. Concentrating on something other than the problems and tasks at hand can really help settle a busy brain.
Now, I am always trying to think of ways to motivate folks to move away from their computers and get into their bodies. However playing games is a wonderful way to de-stress. We all like a little feedback in our lives and you can hit the "How am I doing?" button just below the game and find out where you have made mistakes in your puzzle. Plus you can bookmark the page and not have to worry about losing your piece of paper with your puzzle on it. You do have the option of printing out the game too. You can also choose how hard you want the puzzle to be - I can't imagine trying anything other than easy.