It's weird. Yeah, maintaining a particularly skinny or fit body requires a set of rules and habits to maintain, but all it takes to maintain a normal sized body is "eat healthy food when you're hungry and get some exercise." When in the past I briefly hit a 24.0 bmi it was after months of constant overeating of unhealthy stuff and all it took to take me back to my 22 bmi comfort zone was reestablishing regular meal times and limiting my chocolate intake. Staying human sized is not hard and some self restraint is a good thing, this person needs to have someone hand reality to them