Takes about 3 seconds for 99.99% of the THC to absorb into your lungs so holding in for longer then that is just extra tar.
MullManiac Reviewed by MullManiac on . Myth or True, Holding Cannabis smoke in before exhaling? So i was into an argument with this fellow in my JavaScript class, and he says that holding cannabis smoke in before exhaling has no effect, and that really your just killing yourself by holding your breath. Hence preventing Oxygen from going to your brain. I suppose this could be true but i feel like an extra few seconds makes a difference. Even though THC is instantly absorbed as soon as you take the toke, hence the heat. I still think holding it in may get you that extra bit left? I have Rating: 5