When it comes to taking a hit of cannabis, the general rule of thumb is to wait three to five seconds after double-tapping before gently drawing the pen. Don't inhale the vapors (they come in and out of your mouth, like a cigar), but do several more draws of light to allow the timer to run out on its own over the course of 15 seconds. There's no need to hold your breath for longer than a second after taking a hit, as THC is not absorbed after the first division of the bronchi. The key here is to take a deep breath, hold it for 2-3 seconds, and then slowly let it out. Many people believe that holding smoke in your lungs for longer will make you higher, but this is not necessarily true.
While it is true that the longer smoke passes in the lungs, the more it will absorb, there are still traces of chemicals that you don't want absorbed if you can avoid it (especially if you're drinking some high-temperature water).Furna can also vaporize cannabis concentrates with a specialized concentrate oven and even with an oven compatible with 510 oil cartridges. This is a great way to get the most out of your cannabis without having to worry about holding your breath for too long.