Hi,
Not Cathe, but thought I would give you my own experience. I too began to work out excessivly and cut my eating to a mere 1200 cals a day. My body actually went from 16% body fat to 22% body fat because it thought I was "starving" and needed to hold onto body fat to protect my internal organs....it is a survival method for the body. I'm no expert but I was told by my trainer to either up my calories gradually to almost 2500-3000 a day OR, cut down on my workouts. Since eating 2500 cals a day is not an option for me since I don't have a huge appetite, I have cut down on my workouts and actually dropped a pound this week! Just so you know, I too am 44...I hit my Chest, Back, Shoulders, Tri's and Bi's once a week (one part per day) legs are worked using the Freestyle method (4x a week with moderate weights so I don't bulk up-which I do easily) and then 3 or 3 1/2 hours of cardio a week. Each day takes me about 1 to 1 1/2 hours. Sometimes I will do 1 hour of cardio 3x wk or 30 min of cardio 6x a week depending on my schedule. Sorry so long, but I hope it helps.