About 3 weeks in these symptoms hit me pretty hard.It felt like I was in a haze and just couldnt concentrate. I'm no doctor but my guess is it's the 3999 other chemicals in cigarettes leaving our bodies for good. In 25 years of smoking, I wouldnt be surprised if I had bult up quite an excess of them.
Brian has quit smoking. He is starting out by switching to vaping. It turns out there is more in cigarettes that causes withdrawal than nicotine.
He catalogues the effects of quitting on other habits, like caffeine and social media.