I wonder if kids are actually better at surviving than adults in those situations. Especially young babies, they are very chubby for a reason. We have to remember that although surviving 40 days without a parent is extreme, it’s probably pretty common in our history.
On the other hand, they need to find less fruits to survive ... maybe adults need to eat to much to survive in improvised conditions? Like, it is way easier to find a small amount of fruits?