Well, for those who smoke to relax, If MJ suppresses immunity, works on lungs, good luck if you get sick, maybe covid. You have set yourself up.
If one feels like they have to ask if it is ok to use MJ to relax, then their conscience is bothering them, hm, why? My dad relaxed with lucky strikes. About a carton a week. He died at the age of 54. cancer from lung to brain, usual course.
It may be your decision, medically, do it right or not at all. I don't want to meet a driver impaired with MJ on the road. Something that can not be measured, hm, will the driver on MJ be in trouble? Is smoking MJ the same as a cigarette, and no one gets in trouble?
I prefer to relax with a rosary, a good religious book, a bubble bath and save $$$, and be healthier in the long run.