Dont hold tobacco hits, dont hold weed hit's, it doesnt get you higher. Beleive what you like, but it doesnt as 95% of ALL THC is abosrbed instantly.

And smoking weed with a filter [Cig filter] does waste weed, as it filters out the THC molecules, which is the same as it filtering out the tar in the smoke of the toabcco. The tar is in the smoke. It's the same with weed, the THC is a resin in the smoke. It'll get filtered out and then its a WASTE of time.

Enjoy.