The book “The most necessary trainer for your brain” contains exercises for training memory, attention, concentration, creative thinking, as well as tasks and riddles for the development of logic and deduction, which can increase the performance of the brain. The brain needs to be constantly trained, because if it does not receive new impressions and information, it atrophies and ceases to function normally. Therefore, it is simply necessary that our brain constantly works, and this book will become a reliable simulator that you can take with you everywhere and which you will never part with.