Great if that works for you, absolutely didn't work for me. We had one, and it was a soul destroyingly mind-numbing activity, second only to swimming laps. Rath

Great if that works for you, absolutely didn't work for me. We had one, and it was a soul destroyingly mind-numbing activity, second only to swimming laps. Rather than helping the mental state, it just left me angry at wasting time without any "letting your mind wander" external stimuli every single time.