Adequate sleep is very important if you want to have ideal cognitive ability and brain health. If you don't get enough sleep for a long period of time, your brain doesn't get enough rest, which can greatly increase the chances of cognitive deficits. However, more sleep is not always better. Studies have shown that cognitive function is best achieved with 6-7 hours of sleep per night, but too little sleep (less than 6 hours) or too much sleep (8 hours or more) can have a negative impact on cognitive performance and brain health.
