designed to support and stabilize the cervical spine, the lumbar spine-- actually the entire spine. i find it to be very safe and very efficient. i think it's by far the best way to do a crunch. >> the first thing i noticed was the support for the neck. in six weeks, i got completely ripped abs. >> when you're coming up rocking, you have that support in the neck, you have the support in the back. i lost 20 pounds in six weeks. >> with the ab rocket, it's supportive and really effective in a short amount of time. i lost 4-1/2 inches off my waist alone. >> i lost four inches in my waist. this was less strain on my back, less strain on my neck-- the results are right here. >> you just rock and twist. >> i lost a total of 9-1/2 inches. >> i have abs! >> i lost 30 pounds in six weeks. >> 21-1/2... >> 20 pounds. >> five inches. >> 12-1/2 inches. >> i have abs! >> 13 pounds. >> 20 pounds. >> where was my life without this? >> in 12 days... >> over 50 pounds. >> 13 pounds. >> three inches. >> rock and twist. >> chris: over two million