I easily walk 8 miles in a work day and I do 10 mile day hikes no problem. He's acting like he's about to embark on a LOTR style journey. Sometimes my SO and I will just pack a quick lunch, shove it in a day pack with some extra water, and go out for a 7-10 mile hike so we can have lunch with a view. It's amazing how scared fats get at the mere idea of being away from food. Also, all of his shit, even his bag, looks brand new.