Have you been smoking the same amount each time? If you smoke too much you'll have some intense highs when you first start smoking. It's probably a tolerance issue though I still hit a new level every once in a while.

But yeah your friend is right, THC breaks down into CBN and produces the "couchlock" effect and a more messed up feeling. This website claims that "CBN levels can be kept to a minimum by storing cannabis products in a dark, cool, airtight environment. Marijuana should be dry prior to storage, and may have to be dried again after being stored somewhere that is humid." It also depends on how early/late the plant is harvested overtime more THC will breakdown into CBN.
Setzer12 Reviewed by Setzer12 on . Preserving Chemicals in Weed I acquired some chronic in late December and have been using it 1-3 times a week since then. For the first month or so, it gave me great highs; mellow, not too intense, but still that feeling of being really high. However, over the past few weeks, I have been getting overly intense highs, with really intense body highs, which is something that I don't like. My friend said that this was due to chemicals in the weed breaking down into CBN, and that the increased CBN caused the intense body Rating: 5