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A measurement of how tired you are. Also can be used to denote how far away from dropping dead asleep you are. (0 - minimum; 100 - maximum) Mathematically: {1 - (Ability to stay awake and do whatever you are doing at that point of time)/(Ability to keep doing whatever you are doing after 12 hours of dreamless sleep)}x100 where units of Ability are user-defined as long as the unit is constant in the numerator and denominator. A Tiredness Quotient (TQ) of 0 would mean you are not tired at all or you are wide awake with no hint of fatigue. A TQ of 100, on the other hand, would cause you to fall sleep involuntarily. In some countries people may refer to this as Tiredness Index or Fatigue Index or Fatigue Quotient.
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