Only on my fourth day without the stinky sticks but noticing some great improvements. My tongue is pink not black. Nicotine yellow fingers gone. I didn't even realise my chest used to be tight but it must have been because it's not now (if that makes sense). Breathing not as shallow as it was. I am also fortunate in that I have had no withdrawals at all apart from slight headache in the evenings. Mind you I think I'm chain vaping - not worried about that though it's early days and no intention of cutting down on that for quiet some time.