Smoked around 15-20 a day for around 20 years… Recently started amateur boxing and during a sparring session, I took a pretty hard gut punch which winded me. I couldn’t catch my breath back properly, and has to touch the canvas in the next round to stop the fight, as I just couldn’t recover my breathing. The next day, I bought an aspire cf sub ohm, and that was a month ago. Have had one ’slip up (cig) ‚ in that month. I’m now able to box more rounds, and train so much harder. Best thing I’ve done..