How the heck do you fall asleep on such as short flight ? Long haul I could imagine, but this...... !?!
Quite easily actually. Imagine 8 very short very busy sectors a day x 18 days a month = cumulative fatigue. Up very early with massive doses of caffeine. About mid-morning finally have a chance to inhale a 3 minute "breakfast".
Caffeine now wearing off and food finally in the stomach. Top of climb and autopilot on and warm sun shining in cockpit.
Been there done that. Both of us. More than once.