To cite just one difference, you can be in ketosis but burning a much lower volume of fat than usual, simply because you are at rest. (philmaffetone.com)
This is not abnormal as there have been over 50,000 comments in the 18 months of the blog existence with lower volume at the start - up. (climateaudit.org)
Until there is some market penetration these machines will be produced in low volume high cost quantities. (inhabitat.com)