BS”D
All I want to say is that smoking does often help concentration – maybe the best way to handle this is for a few trendsetters to switch to smoking pipes. The tobacco from pipes is not inhaled into the lungs, it is even better when it comes to helping concentration, and can easily be quit.
I smoked a pipe for 18 years and quit when I felt like it. Then I started again for about 2 months, stopped again and haven’t smoked now for over 2 years. I did no damage to myself all those years that I smoked except for an occasional tongue burn that made it hard for me to eat for a day. And, statistics show that pipe smokers live LONGER than non-smokers!