A flight crew has a layover after a long-haul flight where they have to spend the night. How many points do they gain or lose while sleeping or while staying awake respectively?
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A
They gain 2 points for each hour of sleep and lose 1 point for each hour of staying awake.
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B
They gain 1 point for a short rest and lose 2 points for each hour of staying awake.
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C
They gain 2 points for each hour of sleep and lose 2 points for each hour of staying awake.
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D
They gain 1 point for each hour of any rest and lose 1 point for each hour of staying awake.
SLEEPING CREDIT/DEBIT SYSTEM
Sleeping and staying awake cycle can be seen as similar to a credit and debit system. We gain points when we sleep and we lose points when we stay awake. Each hour of sleeping gives the individual 2 points, and the maximum points we can get is 16 points even if we sleep longer than 8 hours. Each hour of staying awake we lose 1 point. This means that with each hour of sleep we can stay awake for 2 hours before we lose our points and feel the desire to sleep again. The fewer points an individual has the readier they are to sleep.
For example, if we sleep for 6 hours we gain 6 x 2 = 12 points. This means that we can stay awake for 12 hours before we lose our 12 points and feel the need to sleep again. If we stay awake longer, we built a sleep debt of 1 point per hour which means that the next time we go to bed we need to sleep longer (one hour of extra sleep for each two extra hours of staying awake). For example, if we stay awake for 4 hours extra after our points are lost, we have to sleep for 2 extra hours when we go to bed to recover. This system is an approximation since sleeping needs vary among individuals.
- Hours Slept x 2 = Hours of Sleep Credit
- Hours Awake / 2 = Hours of Sleep Dept
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Romania2
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Austro Control1
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