I can really say that you are the stupidest mofo ever if you are steadfast about your beliefs about holding hits.

First off, as everyone here has pointed out, it does NOT get you higher (5% - 10% hah thats laughable) second of all smoke doesn't enter the lungs all at once, unless you're doing a gravity bong or a bong or something similar.

So you're already getting more tar than you need by holding it at all, because usually people take at least 2-3 seconds to hit the pipe but the smoke is transfered to the lungs as soon as they start to hit it; the smoke pulled from the start of their hit has already been cleared of THC before they are even done hitting the pipe.

I still hold for a fast 123 count after finishing a hit.

One summer I was smoking at home and in order for my dad not to catch me i would clear my hits and then blow them into my computer intake fan. It worked fine but after that summer my lungs ability to filter oxygen and even hold smoke decrease INCREDIBLY. It really sucks, I wish I wouldn't have done it now.

I get really bad chest pains and cough up all kinds of shit that would make the blob look like a tuesday night special.