To increase your cognitive level, you need not have to solve crosswords or puzzles. It is because there are certain foods that can naturally increase your intelligence. For this, you have to consider the benefits of foods rich in zinc, such as nuts, cereals and fish, especially early in life.
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Do you solve crosswords?
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Yes
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No
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Brain food is what these puzzles are. I work them often and have Mahjong games I play as well.
Yes. They are all interesting and keeps us busy too.