1. Get hold of a real pilot's monthly roster with 90 hours flying on it.
2. Load a Windows "Flight Simulator" programme into your computer.
3. Ask a friend to accompany you to the Supermarket. Get him to report to the management he suspects you of shoplifting - endure the cross examination and personal body search. Return home.
3. Fly the above roster in real time..........no cheating and no dozing at the computer !
4. At the conclusion of the flight, jump into your car and drive it around for an hour before returning to home
Repeat 2 to 4 five times...........long-haul or twenty-five times.............. short haul
Arguments with spouses, partners, children, local tradesmen and neighbours should be encouraged to add to the realism.
Try it for a month.............It'll give you an inkling into the fatigue factor