[quote=ProToker0622]"Cannabis smoke is usually inhaled deep into the lungs and held there for an extended time, in order to maximize absorption of the active compounds. While cannabis users in North America often retain the smoke in their lungs for up to a minute or longer, preliminary laboratory data suggest that the retention of almost all of the cannabinoids in the inhaled smoke may occur after a considerably shorter interval (less than half a minute may be sufficient).399,487 By contrast. prolonged retention of inhaled smoke is not common among cannabis users in either India or Jamaica, although deep inhalation techniques are typically used.412,534 On the basis of the present data, then, it would appear that under optimal conditions, a smoker may absorb up to one-half of the THC available in the cannabis material. Under most conditions however, both social and experimental, considerably less of the THC actually enters the physiological system[n]

The lack of standard administration techniques generally renders detailed or quantitative comparisons quite tenuous, both among experiments and between laboratory and social situations. "

You guys are so touchy. I think the above statment says all results seem a bit random, no matter who or where you are.
I say inhale less, hold it for longer, and don't use tobacco.