Every morning, my alarm goes off, I wake from my slumber1 and hit the snooze button. Then I crawl back under the duvet to grab a few more minutes of shut-eye. "Tonight I'll go to bed early," I tell myself. But, evening comes and I get a second wind, completely forgetting about my early night.
Why am I finding it so difficult to get a good night's sleep? And is it a problem?
The amount we sleep has declined over the years and insomnia2 is on the rise. Modern technology is often blamed. The light from our smartphone affects levels of melatonin – the sleep-inducing hormone3 - keeping us wide awake into the early hours.
Lack of sleep can badly affect our health and memory. We need deep sleep to move our memories from short-term storage into long-term storage. If we don't get enough sleep, we could lose these memories. This is especially disastrous4 for people studying for exams.
So, how can we learn to sleep better? For Professor Till Roenneberg, it's important people recognise
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