I got some white cheddar popcorn from Smartfood Brand — air-popped. 160 calories for 2 cups. I will only eat about 2/3 of a cup at a time, because I’m just not used to snacks like that. So it will take at least a week to empty the bag. Maybe longer, if I forget I have it... ;o])
I don’t like popcorn much, except for caramel-chocolate covered. The Cub Scouts don’t sell that kind any more.
At the rate you’re going, you’ll be thinner than I am by the time you’re well enough to travel.