OP,I have been slack for about 5 or 6 months and I know how you feel,like crap! I was doing either strength training or running three miles, 5 or 6 days a week. Today was the first day I'm back on the wagon. Gyms and the "latest" fitness craze such as cross training helps some people who need motivation. It's all about marketing, peoples desire to get in shape and charging you $. For a grand you can get everything you would ever need to strength train off craigs list and it's free to run outside if you choose to do outside cardio. I see the cross-fit programs and they use little or no equipment, such as dragging a tire around a parking lot or doing laps around a parking lot with weight strapped on you. Save your $ and get your own stuff,you don't need much as the cross-fit programs demonstrate.