maybe when you argued with me about holding smoke you wernt thinking about this, a bong allows you to hold your smoke for a bit and i know it takes longer than 5 secounds to absorb a bong rip. now if i set a timmer and took a deep breath and let it out after 5 secounds and held my breath then did same thing set timmer took big breath and held it 18 secounds i bet you would be way easyer to pass up 1st time. your body is able to retain and circulate more oxygen the 2ed time. This would apply to all chemcles. Why do people Hotbox because all the smoke you blow out has no THC? No. Your body will absorb more of the THC and high will last longer. Bongs and vaperizors own. :smokin: