holding your hit

[wednesday]

is there a certain point where holding your hit has adverse or better effects than just a hit taken ...

i was wanting to try some salvia extract and weed (which would create a wonderful salvia realm and then make it last longer with the weed) in theory anyway....

but in order for salvia to work you take like 2 sometimes 3 hits and hold each hit for about 30 seconds

i know with mescaline if you hold the hit to long some can crystalize in your lungs or something to that effect so i just wanted to see if anything like that would happen with weed

thanks
Paul