I used to eat back my calories but wasn't losing much weight. I've stopped eating them back recently & I'm seeing a drop in weight now. Others say its ok but keto or not I still think you need to have a calorie deficit to see a change in the scale and I think, allowing for human error, how we track calories burned & eaten can be off so unless you are exercising a lot, I wouldn't eat them back, at least not all of them.