i used to spew out the same rhetoric as the ppl above, and then finally i started thinking on my own and tested this out myself

i have to be honest, i got legitamately higher for longer when i held in hits for 7 seconds than when i held them in for 3. i did it over 2 weeks, half a week was 3 seconds and half was 7 both times. i got much higher holding for 7

"99.9% of thc is absorbed instantly" - this is damn near impossible for just about ANY vapor in the world.