I know ignore the numbers, but hear me out.
Okay, so I hit 180 pounds the other day, which is a good weight for my height and frame as a male, and not too terrible for a woman of my height (about 6'1" barefoot). I was pretty happy about this, but today I realized, I have so much dense muscle from riding bicycles that people always guess my weight to be 20-30 pounds less than it actually is, meaning I look like I weigh about 150-160. This puts me just below or at the bottom of my optimal weight for my height and frame as a woman. Great! Sort of.
Say I continue to lose another 20 pounds, which may happen as I am still dropping at about 5-6 pounds a month and I used to actually be between 155 and 160 pounds with 5-7% body fat from my teens into my 30's, so it is not unreasonable. I only went up to 215 because of a medical problem which has been taken care of. At 155 I look like I weigh about 130, at my height that is really thin and light for male or female of any build.
If I go back down to those numbers and almost no body fat left, what will happen when I start hrt? Do I need to retain some of that (if I can) or will that happen on its own as my metabolism slows or muscle starts diminishing? Yes, I know many of you would love this problem, but I'm a bit concerned I will have nothing left to redistribute.