Updated Jan 19, 2021 | 06:15 IST Did you know that 75 per cent of the human brain is made up of water which makes dehydration extremely unhealthy for the brain? Working on improving your cognitive function? Here is how you can go about it | Photo Credit: iStock Images Key Highlights The cognitive function of the human brain begins to decline during the late 20s of one's life By using the right tools and methods, the cognitive function can be enhanced Here are some tips that can help you get an improved cognitive function New Delhi: The brain sustains the body. This fascinating organ is capable of controlling the entire human body. On an approximate, the brain consists of about one hundred billion neurons. These neurons are responsible for carrying information and making the processing and execution of tasks possible. This is the organ that makes multitasking possible for us. Despite being capable of such brilliant tasks, it is our responsibility to keep it healthy to keep it functioning. There are ways to carry out the same and it would never be a bad idea to work on one's cognitive function and polish it because the human brain is an ever-growing organ.