The study focused on the duration, pattern, and quality of sleep and how these factors affected the brain.

The study found that people who slept for seven to nine hours had the best performance, including those who stayed awake till late at night.

People who stay awake till late at night were found to have better intelligence, reasoning, and memory.

The study was conducted by researchers from Imperial College London.

No, new research indicates that those who stay awake till late at night can also have sharp brains.