Short daytime naps may keep brain healthy as it ages, study says

Brief doze may delay brain shrinkage, which occurs faster in people with neurodegenerative diseases

Taking a short nap during the day may help to protect the brain's health as it ages, researchers have suggested after finding that the practice appears to be associated with larger brain volume.

While previous research has suggested long naps could be an early symptom of Alzheimer's disease, other work has revealed that a brief doze can improve people's ability to learn.