Just as the body creates a tolerance for things like drugs and the sort, is it possible that the body builds up a tolerance to LDing attempts like MILDing and/or dream recall? I know I'm not the only one who goes for a long time on a great recall streak and then eventually fades into zero recall, the so called "dry spell". It is said that if you take a break from LDing that your dry spell should end, and I know this often works well for me. Is it possible that this is because the brain is just so used to what you are doing that it fails to register on a subconscious level as important?

Also, on a note taking more place in fact rather than theory, can you build up a tolerance for Apple Juice? Or, more specifically, the ingredients that are helpful as lucid aids? Usually if I've been drinking AJ every night and my recall is still bad, I'll stop for two or three nights and when I use it again it works beautifully.