It's a time-consuming process I think. Boil the skins until they're very soft, scrape ALL the fat off the skin, dehydrate (very low-temp oven / dehydrator). Then deep fry, just like a prawn cracker. I believe the momofuku cookbook has a recipe for that.
I find stretching the legs, arms and back in the morning really help, along with a few core exercises. Somewhat it helps maintain a correct posture. I also try to avoid all kinds of sugary drinks (bottled juice, soda, etc.).