Sunday 30 May 2010

Did you know?

Here are a few things you may not have known about sleep.

1) Your body's internal alarm enables you to wake up spontaneously at the time that you feel is right for you, is triggered by the stress hormone adrenocorticotropin. The levels of this hormone may occasionally rise an hour or two before an expected wake up call to prepare your body for waking up. Sometimes this works "too efficiently" and you wake half and hour or an hour before the time you had in mind.

2) In a study, completed over six years, and looking at a million adults, it was demonstrated that people who get only six to seven hours of sleep a night have a lower death rate than those who get eight hours.

3) The Spanish, possibly because of their "Siesta" in the afternoon,sleep an average of 40 minutes less per night than other Europeans. This is balanced by the fact that Spain also has the highest rate of workplace accidents in the EU, and the third lowest productivity rate. In a gesture to integrate Spain into the EU a campaing was launched to eliminate these afternoon naps/siestas.

4) Oxford University researchers, in 2002,unsurprisingly concluded, that the traditional practice of counting sheep is an ineffective cure for insomnia. This mental activity is so boring that other problems and concerns inevitably surface.

5) During REM sleep, every 90 minutes or so, there are bursts of electrical activity through the brain stem. These are related to dreaming. During an average lifetime, the ordinary person spends more than six years dreaming, clocking more than 136,000 dreams in all. The reasons why we dream have been speculated on for many years, but no one has yet identified the reasons for dreaming.