Up until now they've been living in a situation where strenuous activity to the point of near exhaustion was normal, in near famine conditions. That is to say, most of the time there was just barely enough for everyone to eat but not enough for anyone to be satisfied.
They're now in a situation where there's nothing required of them to do, and as much to eat as they want - and they plan to fully take advantage of the situation. The older man and one of the boys will probably spend most of their free time sleeping, the other boy and the girl tend to be more active and will probably run about exploring the area. What physical effects would this have in terms of health, energy levels, weight, etc. over a period of a month or so?
Terms searched for: rehabilitation for malnourishment, famine aide, breaking a fast, dietary changes health effects, starvation health effects. I found a lot on the problems of malnourshment itself, and refeeding syndrome, but I'm wondering about longer-term stuff.
thanks for the help!