Whilst you sleep, your brain may be taking out the rubbish

Most of us know that a good night's sleep helps us feel more energised, focused and productive the next day. Yet new research suggests sleep may be doing something even more important: helping to clean our brains.

A study highlighted by Science found that while we sleep, the brain activates a specialised cleaning system known as the glymphatic system. Think of it as effectively a nightly housekeeping service that helps remove waste products that naturally build up in the brain throughout our day. Among these removed waste products are proteins called amyloid-beta and tau, which have been linked to Alzheimer's disease and other forms of dementia.

Scientists have discovered that during sleep, changes in brain chemistry and fluid movement help wash these proteins away, supporting long-term brain health. While researchers are still learning exactly how the process works, the evidence continues to strengthen the connection between quality sleep and maintaining a healthy brain as we age.

What makes this research particularly interesting is that it reinforces something sleep experts have been saying for years: sleep isn't simply a period of rest. It's an active biological process during which the body repairs muscles, strengthens the immune system, consolidates memories, regulates blood pressure and now, potentially, clears harmful waste from the brain.

Of course, one poor night's sleep isn't a cause for alarm. However, consistently sacrificing sleep over months and years may mean missing out on some of these important restorative and healthy processes. That's why sleep experts continue to recommend that we should all aim for at least seven hours of quality sleep each night.

At JIMJAMS, we believe great sleep is one of the most valuable investments you can make in your current and future health. Whether it's creating a consistent bedtime routine, reducing screen time before bed, or simply wearing comfortable sleepwear that helps you relax, small changes can make a meaningful difference.

You work hard all day, let us help you rest easy at night.

Sources:

·       Peel, M. (2026). Sleep and Alzheimer’s disease may be connected; your brain clears toxic waste during rest. [online] Australian Financial Review. Available at: https://www.afr.com/life-and-luxury/health-and-wellness/sleep-helps-brain-clean-alzheimer-s-linked-toxins-study-says-20260522-p5zzvy

·       Leslie, M. (2025). Scientists uncover how the brain washes itself during sleep. AAAS Articles DO Group. [online] doi:https://doi.org/10.1126/science.zye6h6x.