I am 26, and 5'2.
I maintain if I eat anything over 1300.
To lose a pound a week, I can go to 1200.
To lose 2lb, I need to eat a bit less than 1100.
I know this because I've seen it for myself and it's really shocked me. It isn't about to calories, is it! I tried upping calories and no, that doesn't work. I have to stick to very little
There's so little wiggle room.
My H can eat 2200 and not gain any weight at 6'3 