Not just your bmr goes down, hunger hormones increase as well.

Look at the research you will see that all the studies here a large amount of people can keep off the weight are just one yr long. When you get to a 3-5 yr study, the numbers for people who can maintain the loss are 5-20 percent. And if you have obesity when you try to lose weight the odds go way down, because obesity changes your hormones even further.