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We are doing exercises to keep our bodies fit and in shape. There are huge number of exercises that can be done in order to shape the body the way we like. Similar to this, we have large number of exercises to keep our brain sharp as well. Crosswords, puzzles or problem-solving exercises are just one of the ways to keep the brain fresh and alert.
Nowadays, with the easy access to the Internet, we can find numerous puzzles that help our brain be sharp. These puzzles or tasks are