Can be used with or without a heater. Can be used with or without vibration and stretch only. I'm not usually a fan of vibrations, but in this case, vibration helps a lot during intense stretches. Just when the stretch gets to a point where I feel like I can't handle it, it starts vibrating and that makes it more bearable and relieves the pain of the stretch. He does a variety of stretches, gives you a break, and stretches again. Breaks are nice, and if I don't use vibration while I'm working, breaks help. It has a hand-held control to stop it at any time. You have full control over this at all times. I am very passionate about my job and often suffer from back pain and sciatica. I had a sciatica problem when I first got this device. I used it right away. The next day I was able to jump out of bed without a single problem. I haven't had any problems with sciatica since I've been using it. I'm totally amazed at how well this has helped me.
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