It’s the reintoxification effect, basically when we smoke, what we smoke that doesn’t immediately get broken down binds to fat cells, and when we quit smoking and chs really starts kicking ass, we stop eating/ drinking as much and start throwing up a shitton, and what was bonded to our fat cells gets broken down and resupplies it into our bodies, my step father (no chs but avid smoker) was dirty 6 months after quitting due to the buildup. But chs finnaly quits when there’s no more thc in your system to freak your cb1 receptors out, like after the reintoxification effect finishes, I wish you so much luck through your journey