Tweet {flickr photo by: danmachold} I used to exercise 5-6 days a week. When I was in my early twenties and really into it, I would sometimes work out for twice a day 6-7 days a week. I was not an athlete. I did not aspire to be a fitness model. And surprisingly I was slim, but not at all muscular or athletic looking. Maybe I was a bit of addict and had too much time on my hands. But recently, my exercise has tapered down a notch or two. Muscle aches and pains make overdoing it less attractive and…