2C It's a nightmare

Sleep ED

"Replace the phrases in bold wit h t he correct form of the phrases in t he box.

not sleep a wink get back to sleep have a lie-in be a light sleeper be fast asleep have nightmares doze off

take a nap

My gra n d pare nts of ten have a short sleep after l u n ch .

2. l haven't had bad d reams for a lon g time.

3. I did n't sleep at all last night.

4 My dad of ten falls asleep for a short time in fron t of t h e TV.

s Ilove staying in bed on a Su nda y morn i ng.

6 He often wakes u p early, bu t he finds it easy to go to sleep again .

7 You won't be able to wake him u p. He's in a deep sleep.

s Shhhh! My brother wakes up very easily.

Reading

6. Read the article and write headings a)-c) in the correct places 1-3.

   1. How m uch sleep do we need?

b) Why do we sleep?

3. What happens when we go to sleep?

Read the article again and an swer the questions .

1. What happens to your heart i n stages I lo 4 of sleep?

IUIQW.$. <:fqwn.

2. Why is stage 5 called R EM ?

3. Why clo we need stages 1 to 4 of sleep?

4 What happens du ring REM sleep?

s Why is REM sleep im portant lo babie s?

The science of sleep

Sleep is one of the body's most mysterious experiences. Scientists don't completely understand the process, but it seems that all living things need some sleep. And some need a lot more than others!

1 ·······---·····-----------······------····-----------·-·--·----···---------··················-··----------

There a rc five stages of sleep: stages 1, 2, 3, 4 a nd R EM

(rapid* eye movement ). I n stages 1 lo 4 our body becomes more relaxed. Ou r m uscles a nd hea rt rate slow down a nd our brai n becomes less active. Stage 5 is ca lled R EM sleep. Our hea rt beats faster a nd ou r eyes move quickly i n different directions. People d ream d u ri ng th is stage and we ca n not move at a ll - proba bly to stop us from doi ng the actions i n ou r d rea ms.

2 ······-··-························--··-······················-·-········-·---···-··········-----···········

An average person spends al most a thi rd of thei r l ife

sleepi ng! Is i t a waste of ti me? Scientists bel ieve tha t when the heart a nd bra i n slow down, the body i s recoveri ng* after the day's work. They also th i nk that REM sleep is i m porta nt for memory a nd lea rn i n g - ba bies have twice as m uch REM sleep as adults.

3 ---------------------·-··-·---··--·----·---·-······-··-·---··-----·-·-·····-··-·····--·-··--·-·---···

On average a n adult needs about 7-8 hours' sleep

every day. A baby needs 12-16. I n the a nimal world, bats sleep for about 20 hou rs every day. But a giraffe sleeps for only a n hour or two every night.

*rapid = very quic k

* rcco\'l'r = get hack your strength

Gradable and strong adjectives; adverbs ED Fill in the gaps wit h t hese adverbs. More than one adverb is possible.

really incredi bly absolutely extremely

^{really hot} 6 ················-··-··-······ boiling

^{2 _ g_ P.l.vJ/y shatt ered 7} . . . . . .. di rty

3 ... .............. ........ bca u t iful 8 ..... ·-···················· tired

⁴ ----··----·····--·--·-·------ small ^{9 ···-----····-···-············ gorgeous}

6 Pu t these in order of t he a moun t of sleep t hey need (least to most ) : babies, adu lts, bats , giraffes .

5 ····-····-······-·---··-----· fiIth y

10 ··---··-·-··················- tiny

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