People should also be aware that you may gain even more weight than you lost if you immediately go back to eating as you did before (assuming you ate unhealthily). I think (in non-scientific layman's terms and opinion) it is partly because most people's metabolism slows down during the Master-Cleanse and it takes a while to get back to speed; your body has adjusted to fewer calories and will store excess calories as fat. So you really have to be careful what you eat and listen to your body, most people after a Master-Cleanse seem to crave fruits and veggies much more than they ever did before, I know I do!