Hi all! I new to this site and was browsing through some of the previous posts. I came across a few that were questioning the effectivness of a TENS unit. My answer: I because of this machine, I am 100% off my pain meds!!!!! Let me just tell you that it has been a miracle maker for me. For those who do not know what exactly a TENS unit is, let me breifly explain. It is a little box about the size of a cassett tape and is extremely light weight so that you can clip it to your waistband. It has two long wires with two electrodes attached to each end. These electrodes are to be attached to areas of pain such as your back and deliver little electric shocks. It sounds painful, but I actually find it very relaxing. The machine has various settings of intensity (which should be set according to your Dr.'s instructions). Now let me tell you how much this unit has changed my life. I wear it all day every day and use it in 30 min intervals. I can now do so many things that I have not been able to do for years because of back pain. I can not only cook a full meal but I can also wash the dishes afterwards. I can do my own laundry and even carry groceries up to my apt. Last weekend was the ultimate test. I went with my mom to the Philly Flower Show....had to drive 2 hrs.....walked around for almost 8 hrs....and drove another 2 hrs home. Now if I had tried to do this two months ago I would never have survived the car ride, never mind the 8 hrs of walking. I must say that I felt ok afterwards and the thing that hurt the most were my feet! I expected to wake up the next morning and not be able to even get out of bed, but I felt good as new! I felt so good in fact that my husband and I played 2hrs of racquetball that afternoon. I never thought I would see the inside of a court again let alone the very next day after something as physically taxing as the flower show. Needless to say, I am so exicted about the future now. I am able to exercise with little discomfort and can not wait to finally loose the extra 100 lbs that I have been carrying around for 5 years. Not only do I feel better physically but also I feel better mentally. I feel human again, it feels so good to be able to do "NORMAL PEOPLE" things. My advise to anyone out there is to discuss this with your Dr. What do you have to loose? Good Luck!