Well, I say I am 5' 1", but I suspect I might be 1/4 or 1/2 inch shorter now. Thankfully, I'm on medication to stop the osteoporosis, which runs in my family.
I think you are right, Catrin, about mixing up the exercise. Since I started the weight/core/circuit classes (in November) it's easier to manage my weight and I have muscles that I haven't seen, even from heavy duty cycling. My body fat has always been consistent; it only goes up when I get near my danger zone weight. I have a range for that, too. I know my body gets adapted to whatever I am doing very easily. Also, with me, sometimes, less is more, as someone stated in Solo Biker's thread. I can do intervals on the trainer for 30 minutes, or go for a 10 mile ride, which includes challenging hills and maintain my weight. Since I am not training for anything, this keeps me from burning out and lets me enjoy my longer rides/skis/hikes a couple of days a week. I seriously couldn't spend the amount of time you spend working out so many days a week. When I see my weight or body fat climbing, or I know I'll be eating more than usual, I will add in more time, but generally, it's a point of diminishing returns for me. I get sick or injured...