The topics of dreams always has interested me greatly and I am thankful for the information you have provided. Sometimes when dreaming I am aware that my feet or hand shakes oddly. Is this part of lucid dreaming or some other nervous state....also, I remembered clearly in college reading a history book and being awakened feeling like I lived in that century and wanted to help the slaves escape, as a fire was burning the villages. And actually, I wasn't born until centuries afterwards but something weird happened that it felt so real.