Cognitive exercises are activities designed to improve mental functions such as memory, attention, and problem-solving skills. These exercises can include puzzles, brain games, and memory tasks that challenge the brain and promote cognitive health. Engaging in such activities regularly can help maintain mental sharpness and may reduce the risk of cognitive decline as one ages. Many cognitive exercises can be found in various formats, including mobile apps, online platforms, and printed materials. Popular examples include Sudoku, crossword puzzles, and memory card games. These activities not only provide entertainment but also stimulate the brain, making them beneficial for individuals of all ages.