Ivan Loomis is a former Marine who also served in the Air Force. With professional experience in military and law enforcement, as well as security contracting, he has logged a lot of time and miles in the backcountry creating videos leveraging those experiences for Kit Badger, a gear review site.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.