Fat burners and your natural metabolism

[cmanco]

I've been researching a little bit about fat burners before my cut comes up in march, and I was just wondering... some increase your metabolism from 5%-10%, I was just wondering if your body can get used to this and when you come off of it, your body might not have as fast of a metabolism as it did originally since it got used to using the ingredients in the fat burner to increase the metabolism. I'm only 18 so I don't want to have to deal with any long term affects. I'll only start taking it when I get down to about 10% to get rid of the last few pounds.