I wonder how many start that way? A lot actually.
The problem post hike is at the end of the hike, the body is starved, malnourished and used to burning 7-10K calories a day. Then all of sudden, you have access to unlimited amounts of food so you eat and eat and eat. Before you know it, you've blown up like a balloon. After one of my really long LASH hikes, I got addicted to Hot Fudge Sundays from the homemade ice cream stand down the street