i'm farmiliar with the 5 second rule although i've heard that your lungs soak up the thc instantly meaning less than 5 seconds would also be adequate.
Cas Reviewed by Cas on . Holding large hits: Is not a good idea. Wikipedia entry say "A study has shown that holding cannabis smoke in one's lungs for longer periods of time does not conclusively increase THC's effects." and here's the citation they give for that info: "Block RI, Farinpour R & Braverman K. (1992). "Acute effects of marijuana on cognition: relationships to chronic effects and smoking techniques". Pharmacology Biochemistry and Behaviour 43(3): 907 â?? 917." ------------------------ Rating: 5