I wasn’t really sure what to expect. I had been using a portable unit from a different manufacturer and didn’t really expect this to be that much different. But I said "What the heck, they have a good return policy, so may as well give it a shot!". This thing was so different than the portable unit I bought from Amazon. We don’t use the old one anymore, and I look forward to using this every morning. Helps me wake up and just get my day going. It is really hard to describe and the videos don’t really do it justice, but I do highly recommend giving it a shot.