This World Sleep Day (13th March), we are reminded just how important sleep is for brain health. Research suggests that sleep acts as a 'cleaning cycle' for the brain. During sleep, the brain uses the glymphatic system to flush out metabolic waste, including proteins such as amyloid-beta that build up during the day. These proteins are linked to conditions like Alzheimer’s disease.

Sleep also plays a key role in memory and learning, helping the brain move information from short-term memory into longer-term storage. A nap as short as 6 minutes can help boost memory!

At BRACE, we have funded research projects to better understand how sleep and brain health are connected, and how improving sleep could help protect against dementia. In 2020, BRACE funded a PhD by Dr Chloe Tulip exploring the relationship between sleep and dementia. Below, Dr Tulip shares her top tips for improving your sleep and supporting better brain health.

Top Tips for Better Sleep

Wake Up at the Same Time Every Day (Yes, Even on Weekends)

Our bodies thrive on routine. Waking up at the same time daily, even on weekends, helps regulate your body clock so that you feel sleepy at the same time each evening. This consistency pays off in better sleep quality and even for heart health and blood pressure!

Be Cautious with Napping

Napping can interfere with your night-time sleep by reducing the sleep pressure needed to fall asleep easily in the evening. If you must nap, keep it short (around 20 minutes) to avoid entering deep sleep, which could disrupt your sleep cycle later.

Quality Over Quantity

The myth of needing 8 hours of sleep can add unnecessary stress. Most people do fine with about 7 hours, and it’s normal for sleep duration to vary. Focus on sleep quality rather than obsessing over the number of hours.

Listen to Your Body’s Sleep Signals

It’s tempting to go to bed when we’re tired in the hopes of falling asleep quickly, especially when we’re trying to stick to schedule. However, trying to force sleep when we’re not sleepy rarely works and can lead to frustration and anxiety. It’s common to confuse feeling tired with feeling sleepy. Tiredness means physical fatigue, your body needs rest. Sleepiness is drowsiness, it’s your brain signalling it’s ready for sleep. When you feel sleepy, ride the wave of sleepiness to bed!

Enjoy Your Evenings

If falling asleep is difficult, don’t despair. Use the time for relaxing activities that you enjoy but find slightly mundane. Whether it’s reading, drawing or doing puzzles view this time as ‘me time’ rather than something stressful.

Managing Stress

Anxiety and stress are common culprits behind sleep issues. Identifying the source of your stress and finding ways to manage it, such as through a worry journal or designated worry time, can be effective strategies for improving sleep.

Support your Rhythm!

Getting enough natural light, especially in the morning/early afternoon, helps regulate your sleep/wake cycle. Regular exercise, including a gentle walk, also strengthens this cycle. Both will make falling asleep and waking up easier.

Remember, sleep is a natural process and just like breathing, our bodies know how to do it instinctively. Although we may sometimes worry about it, sleep will never go away. If we keep to a consistent sleep routine, are flexible in our expectations of sleep and reduce the stress we place on ourselves to achieve perfect sleep, our bodies will naturally settle back into a sleep rhythm. Be patient when making changes to sleep, but trust in your body to do what it is designed to do, and your sleep will thank you for it.

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