Going without food was normal for man. You dont need to have food for several days at all. Zero , none. You can function at beey high levels. If youve never done it, try it. Make you shoot straight.
My fathers buddy was on Batan in WWII. He lived near us. He made the march and survived prison camp on next to no food for months on end. Tough guys would die when they gave in to dispair.
Seems strange but LTC Nick Rowe Was killed in the PI many years later. Guy who made surviving a school for USA Operators and fliers.
Its Holeywood in Other words its bullchit. If all you have to do survive all day with modern equipment, clothing, foothear, weapons, etc, etc if you cant do it it may strengthen mans gene pool. Lord knows last 260 yrs has weakened it tremendously.
Hedge~