Our brains get smaller as we get older. But this doesn't happen as fast in people who regularly take short sleeps during the day. That's according to a new study. Researchers suggest these naps might reduce the risk of developing conditions like Alzheimer's in later life. (Cover image: Getty)

Key words and phrases:
power nap
short sleeps, usually during the working day, to help you perform better at your job.
She took advantage of her lunch break to have a quick power nap.
If you're feeling tired, take a quick power nap and then carry on.

sharp
alert and quick thinking
That's a great idea you're sharp today!
I don't feel very sharp after work.

hinder
makes something difficult or worse.
Long working hours can hinder family life.
I was hindered by the bad weather and couldn’t get home.

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✔ 5:14 Language summary

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