Lots More Information
Related HowStuffWorks Articles
More Great Links
Sources
- Human Touch. http://www.humantouch.com
- Human Touch. "HT-7450 User's Manual." http://lib.store.yahoo.net/lib/humantouch-com/HT-7450-usermanual.pdf
- Sanyo. http://us.sanyo.com/appliances/massage_chairs/index.cfm?productID=1480
- Smith, S. E. "What is a Zero Gravity Chair?" WiseGeek. http://www.wisegeek.com/what-is-a-zero-gravity-chair.htm
- VascularWeb. "Varicose Veins." http://www.vascularweb.org/patients/NorthPoint/Varicose_Veins.html