Aerobic exercise, according to the findings of this study, is good for increasing hippocampal size, cardiovascular fitness, and memory. Exercise demonstrates a low-cost and effective strategy for maintaining senior people's health and demonstrates that maintaining exercise practice is the greatest approach to improve mental and cognitive health. Exercise is beneficial for your brain in many ways, including enhancing memory and reducing the risk of Alzheimer's disease. The more active your lifestyle, the better for your brain. Studies have shown that regular exercisers tend to have larger brains than non-exercisers. This is probably because exercise makes you smarter - or at least helps your brain grow bigger. It has also been shown that women who exercise regularly experience less of a decline in memory ability as they get older than women who do not exercise. It is estimated that about 150 million people worldwide have dementia, with that number expected to increase to around 225 million by 2030. Dementia is a general term used to describe problems with thinking and behavior caused by damage to the brain cells responsible for these functions. There are several different types of dementia, each with its own cause and treatment plan. People with dementia lose some type of memory function permanently. However, there are treatments available that can slow down or even stop certain types of dementia from progressing. Exercise may play a role in preventing or treating dementia by keeping your mind and body healthy.