Rhythm of Life (Reading)

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Complete the following text with the correct sentence from those that you have below. There is one extra sentence that you don't need to use. 

Rhythm of Life

Scientists have discovered that our bodies operate on a 25-hour day. So tuning into your bodyclock can make things really tick, says Jenny Hope, Daily Mai Medical Corresspondent.

Choosing the right time to sleep, the correct moment to make decisions, the best hour to eat - and even go into hospital -  could be your key to perfect health.

Centuries after man discovered the rhythms of the planets and the cycles of crops, scientists have learned that we too live by precise rhythms that govern the ebb and flow of everything from our basic bodily functions to mental skills. A_____

But it's not just the experts who are switching on the way our bodies work. B______ Prince Charles consults a chart which tells him when he will be at his peak on a physical, emotional and intelletual level. Boxer Frank Bruno is another who charts his bio-rhythms to plan for big fights.

C.______ Sleep, blood preasure, hormone levels and heartbeat all follow their own clocks, which may bear only sight relation to our man-made 24-hour cycle.

Research shows that in laboratory experiments when social signals and, most crucially, light indicators such as dawn are taken away, people lose touch with the 24-hour clock and sleeping patterns change. D._______

In the real world, light and dark keep adjusting internal clocks to the 24-hour day. E._____ As it falls from a 10 p.m. high of 37.2ºC to a pre-dawn low of 36.1ºC, mental functions fall too. This is a key reason why shift work can cause so many problems - both for workers and their organisations.

F._____ The three operators in the control room worked alternating weeks of the day, evening and night shifts - a dangerous combination which never gave their bodies' natural rhythms a chance to settle down. Investigators believe this caused the workers to overlook a warning light and fail to close an open valve.

Finding the secret of what makes us thick has long fascinated scientists and work done over the last decade has yielded important clues.

G.______ For example, the time we eat may be important if we want to maximise intellectual or sporting performance. There is already evidence suggesting that the time when medicine is given to patients affects how well it works.




1. Temperature and heartbeat cycles lengthen and settle into 'days' lasting about 25 hours.

2. The most famous example is the nuclear accident at Three Mile Island in the US.

3. But the best indicator of performance is body temperature.

4. Leading experts say every aspect of human biology is influenced by daily rhythms.

5. Dr. Michael Stroud is one of the few people alive who can genuinely claim to have tested their bodyclocks to the limit.

6. The aim is to help us become more efficient.

7. An increasing number of people study the state of their bio-rhythms before making their daily plans.

8. Man is a prisioner of time.


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