At 5'9", I hovered at an athletic, runner-type body 160 - 165 lbs throughout high-school, college, and most of my adult life.
I hit my mid-40's and it was like a switch flipped - I jumped up to 180-185, then decided to try gaining a bit. The allure of 200 was kinda calling me, but I was only able to get up to around 195 before losing some.
Last year, I double down and started eating like a trash compactor.
I blew past 200 and I'm now waffling between 220-225. (Mmmmmm.... waffles.)
11 months