Cannabis combination with other substances is one of the exciting ways via which consumers elevate the level of pleasure derived from consuming the wonderful plant. Users of cannabis combine it with a variety of substances, and unique among these substances is caffeine. The relationship between caffeine and cannabis is a very intriguing and interesting one. Each substance on its own is so unique and special that from the top of your head, without prior experience with the combination or having the slightest idea of the science involved, you can predict that the combination of these two substances will blow the mind.