I just had this thought while vaporizing with my mflb. during your whole draw , not all the air is gonna enter your lungs , so there will be a gulp of air in ur throat. , because there's probably not receptors there to absorb the thc , before exhaling , by swallowing that air you save a bit of thc , which can be absorbed in the stomache. Though it's a small amount swallowing should be a way to intake as much thc.
Now that I think about it , as long as you time it right , the last bit of breathe in the throat should had little to no thc.
burp? why would there be a burp? swallowing air leads to farts , which would mean that the air past through ur system , meaning that the thc was probably absorbed.
yeah when I swallow air it always makes me burp not fart lol but it would be pretty funny if you swallowed a bunch of smoke and let it all out in one big rip while ur on like an airplane or some shit
thats why people take a breath of fresh air at the end of their hit to pull the rest of the smoke into your lungs. dont swallow air, smoke burps es no bueno.
As far as I'm aware, the stomach isn't renowned for its ability to exchange gas with your bloodstream. Besides, I doubt very much you can effectively 'swallow' the vapour between your bronchioles and mouth, and chances are you'll disgust everyone around you as you make obscene gulping sounds after each hit. Just let that little bit go, or perhaps allow the last fraction of your breath to be clean air, to ensure that nothing goes to waste.