Brain Teaser

Challenge Your Cognitive Know-How!

Staying Sharp

Published November 10, 2025

**A night of restful sleep not only feels great, it’s great for you. What system does your brain use during deep (slow-wave) sleep to flush out toxins?**

Digestive system

Circulatory system

Glymphatic system

Endocrine system

Never heard of the glymphatic system? It’s a network that uses cerebrospinal fluid to flush out toxins and waste products from the brain while you snooze. This process is important for maintaining brain health, so make sure to get your Zs!

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Brain Teaser

Challenge Your Cognitive Know-How!

**A night of restful sleep not only feels great, it’s great for you. What system does your brain use during deep (slow-wave) sleep to flush out toxins?**

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Staying Sharp

UHCRA

Prudential

One Pass

MS15

Brain Teaser

Challenge Your Cognitive Know-How!

A night of restful sleep not only feels great, it’s great for you. What system does your brain use during deep (slow-wave) sleep to flush out toxins?

AARP VALUE & MEMBER BENEFITS

Staying Sharp

**A night of restful sleep not only feels great, it’s great for you. What system does your brain use during deep (slow-wave) sleep to flush out toxins?**

AARP VALUE &
MEMBER BENEFITS