@dawei7 So, I can totally identify. I had a bodpod scan done last year and found out I had a nearly-normal BMI and 40% body fat. I was, at the time, 30f, 152 lbs, 5'5". My RMR came out to be around 1100 calories.
Sarcopenic obesity was new to me, but I'm glad to now have a name for this term...