Evolving personal weight loss goals and when to stop

I didn't settle on a goal until I actually got there. At 5'7" I've been as low as 135 and as high as 172. Right now I'm around 140 with 12 percent body fat and I like what I see in the mirror. I wasn't sure about trying for 135 again, but that turned out too lean.

I had a goal weight at first but later realized body fat percentage is a better guide. So I set a target under 12 percent. Not sure what the right percentage is for a woman your age.

I was at 306 last year on a medication my doctor had me on that only took off about 20 pounds over more than a year. About a month ago I switched and after a few weeks I could feel the difference. In the last month I've gone from 287 down to 270 while holding or slightly adding lean muscle. I'm a 52-year-old male, six feet tall. A recent scan showed my lean mass at 163.5 pounds, so that's what I'm protecting while trying to reach around 12 percent body fat, which would put me near 186.

First goal is 180. That's my ideal body weight and what I weighed in college when I was training hard. Second goal is 205 but lean. It's a bit arbitrary but it's the upper limit of the light heavyweight division in early UFC, which I used to watch with my dad. Ten percent body fat is just to see how it looks, but long term I'm aiming around 15 percent since that's more sustainable and doesn't hurt performance the way being leaner can.

I'm a 76-year-old male who has shrunk from 5'8" to 5'6" over time. Back in March I hit 180, my heaviest ever. Two months before that I read about a medication a lot of people were using for weight loss. When I saw 180 on the scale I looked into it, ordered some, and set an aggressive goal of 155, a 25-pound drop. I reached it quickly so I moved the target to 140, a weight from 30 or 40 years ago. That was a 40-pound total loss. My scale suggested an even lower ideal around 135. I'm now at 133 and trying to add muscle to move the number back up. I still have about five pounds of visceral fat around the middle. I've been doing progressive resistance training three to five times a week for an hour each session. My arms, legs, and chest look decent but the belly fat is hanging on. The other