Having a slow metabolism should be a good thing Assuming that it works like fatties claim and you can still function just fine on fewer calories, a slow metabolism (yes I know this is not actually a thing) would be awesome.  You could spend less time and money on food.  I was talking with someone earlier today about how one of the hardest things to get used to after college was having to take care of yourself and not just go to the dining hall for 3 meals a day.  It takes so much more time than you realize to shop, cook and clean.  I like cooking good meals and all but it would be damn nice to be able to eat a good breakfast and then not worry about food the rest of the day. Of course, what this tells us about fatties is that the reason they think a "slow metabolism" is so bad is because it doesn't let them stuff as much food into their fat faces.  Eating is all that really matters to them and so anything that makes them able to eat more food is good while anything that makes them eat less is bad.   I'm saying this as I'm looking to start another bulk and dreading trying to eat 3500-4k calories per day without resorting to piles of cookies or feeling like a stuffed turkey all the time.  It would be awesome to have to eat a little bit less to gain any amount of mass.