I see the word 'gym and think of working out, moving, and sweating, and then I slowly back away. But Puzzler Mind Gym 3D may be right up my alley as it has nothing to do with fitness.
This upcoming 3DS release is a daily program of brain exercises and puzzles in 3D, so it's like a gym...for your mind! Expect to bust your brian over visual, memorization, word, and number puzzles in a 90-day program of exercises for the mind. Brain training, if you will. You can even see how your brain is being worked with its on-screen 3D brain models. Ubisoft says that the Mind Gym Challenges wereset by Professor Ian Robertson, a neuroscientist and "world expert on cognitive rehabilitation."
Wait. After hearing all of this and seeing the screenshots, this does sound like work.