It's not hard to put on weight and not necessarily a bad thing, in moderation! Plenty of our Indigenous population look well fed , ,and if you end up in hospital , (or lost), having 1% body fat won't end well!Well you've really got to try hard to go hungry. The last Survival Exercise I did with the Australian Army (162 Recce Sqn up near Cooktown) I actually put on weight would you believe.