Despite the absence of physical nicotine dependency after 100 hours, the habit loop and cues associated with smoking can persist, leading to cravings.

“And yet, we all know people who crave who smoked for years, quit, and they crave a cigarette a decade later after they have breakfast in the morning. Right. Let's I So, I didn't I didn't actually know that, Charles. So, 4 days after you smoked your last cigarette or had your last exposure to nicotine, you have a physiologic need for nicotine. Yeah. It's out of your you you have you have completed withdrawal now that that is that that is I had no idea of that but what you still have you still have the queue you still you still have you remember the reward right exactly the habit the habit loop still exists in your brain like if you have a if you have a cigarette with every morning cup of coffee as soon as you pick up that cup of coffee your brain is craving that nicotine and that feels just like an addiction a physical addiction in fact it's in some ways more powerful than a physical addiction”