I'm 5'4", 51 years old, in fat loss mode (currently size 10-12, aiming to get back to my 6-8's). I do Karate 3-4X per week, Spinning 2X per week, full body weights 2-3X per week and I go for a half-hour walk most days at work. I am eating 1800-2000 calories per day, relatively high protein, no...