The best brain exercise I have found is trying to learn another language with anki. As an old man, it is so hard it feels like a form of brain powerlifting. I

The best brain exercise I have found is trying to learn another language with anki. As an old man, it is so hard it feels like a form of brain powerlifting. I really wish I had anki when I was younger. 30 minutes a day of cards on a tough subject and 30 minutes a day of cardio is probably something everyone should do for life.