I wish anyone trying eat this way a good luck! That's the ideal way to eat! Unfortunately, it never worked for me. I start eating to appetite, I end up with 1800-2000 cals a day, and that's experiencing hunger and stuff, and end up gaining fat. At ~1500-1700 cals level I maintain and it involves serious deprivation and in the end leads to sleepless nights and inability to function. I managed to lose and kindda hold pre-preg weight that way for a few years, and it became unbearable. Now I am eating to appetite and gaining. So far about 10 lbs, and about 20 lbs less than I was 'stable' at after pregnancy when I started to lose weight, but since the weight gain shows no signs of slowing down, I might end up back at the border-line overweight state as after preg. I have gained between 1 and 2 sizes in clothes (from size 2-4 to size 6-8 depending on the brand). It is not fun, and I do not look good at this weight.
I try to eat well, though I stopped worrying about macros and I am happy with my fitness regimen.
Can't contribute on horses, but there is always gazzillion people telling me how I need to eat more and exercise less, and how it will magically make me lose fat that is now trapped because of starvation mode, but every time I tried, the same things happen: I gain fat. Not muscle, fat. I have never seen loss of inches at weight gain either.