The one thing that prisoners and obese people have in common is that they are in prison.

For a long period, they don't want to accept the situation and they start to avoid the truth every single day.

Sooner or later the prisoner doesn't have a choice and accepts the idea that he is inside the prison for a period and he has to deal with and find ways to survive and not get crazy.

But obese people,  have all the freedom and can keep avoiding the truth for a long time until a tragedy or a big event happens. 

You are in control of your freedom!