Chicken and egg

A week's holiday is good for the soul. Already I have lost 4lb, just by not being at work. That's pretty good. I've been worried lately about the swelling around my ankles. I retain water down there. It's something that started back in December when I damaged my leg and had to sit still for a couple of weeks. Since then I have had a build up of water regularly in my legs.

I thought this oedema was because I was fat but my recent miraculous overnight weight losses make me wonder how much of my 'fat' is actually water? Which came first? It's a chicken and egg scenario (if you'll excuse the references to food). Am I 'fat' because I retain water, or do I retain water because I'm fat? And anyway, why did it suddenly start to happen when I couldn't get about, but not stop happening once I was moving again. That's highly unfair, I think.