Art Of Landing In Good Shape
here are Five stages in the process of sleeping:
Sleep Involves relaxation and “winding down”, enabled by a decline in the rate of metabolisam. Your body lowers your blood pressure, pulse breathing rate and the flow of blood in the brain. Muscular tension is reduced. The immune system is activated and the production of restorative hormones increased. Sleep has 5 stages:
STAGE 1: the transition from waking to sleep. this stage does not involve any mental or physiological reitution. It accounts for less that 5% of total sleep.
STAGE 2: Basic sleep. Your body refreshes itself but not at a maxmum level. It accounts for about half of the sleep period.
STAGE 3 & 4: Deep sleep, giving maximum refreshment. This is the stage when it is most difficult to wake you and when you feel somewhat confused if you do wake up. Deep sleep is always the highest priority for the body. It accounts for 10-15% of total sleep.
HOW MUCH SLEEP CAN WE LOOSE?: AN adult sleeps an average of 7.5 hrs every 24 hrs on weekdays and about an hour more on weekdays. Most of us can make do with 1-2 hrs less sleep but larger reduction impairs our performance and mood.
A SHORT NAP COMPENSATES FOR LOST SLEEP: A 30 min nap can give the same effect as the last 2 hrs of sleep. howere we often feel a bit sluggish after a nap of more that 30 mins.
JET LAG AFTER WESTBOUND FLIGHTS: During the afternoon/evening on the day of arrival you feel very tired since your bodily functions are at low levels, and your body clock is set for sleep.
You wake up early the next morning, because your body clock is set to according to local time at home. When you wake up you feel relativly refreshed though you start to feel tired again in the early afternoon, and your tiredness increases steadily. It can take a week or longer for your body clock to adjust to the new time zone.
If you return home after 2-3 days you will have problems sleeping in the evening and getting up in the morning, because you have adjusted (delayed) your biological clock a few hours while away.
JAT LAG AFTER EAST BOUND FLIGHTS: Most people find that jet lag is worse after east bound flights. You proberbly sleep well the first night because you are very tired through lack of sleep. On the following night, you have trouble going to sleep and feel tired when u wake up next day. the reason for this is that your body clock is set to sleep during the late morning /midday and high level of alertness in the eavining/early night.
Hope this helps…cheers
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