I have no idea how I inhale, I`ve been doing it like this since the moment I started though. I`ve been smoking like this since I was 15, never had a problem with it. I do always suck in a little extra air after inhaling smoke though, I don`t know why, but I think it just feels better, I`m sure it has no effect whatsoever, it just feels nice to do it.
a good way to check if someone inhales or not is to check their breath when they exhale, if it`s one big cloud of smoke and just air after that, they probably don`t inhale. if it`s a continuous amount of smoke/air mixture, they probably do.
I know that you can get stoned without inhaling as well, it just takes a lot more weed to get stoned. when my lungs hurt and I still want to get stoned I just take a puff and leave it in my mouth for a while and blow out, after a few puffs I`m stoned and I`m not coughing up my lungs