This happened about a year ago. I was very sick, hadn't been able just to take my head off the pillow for a week. And couldn't sleep for two nights running. On the third night I fall asleep to stunning nightmares - I even moaned just to wake up -
but the second half of that night was a real magic - I could see 7-8 extremely vivid lucid dreams at a row. And every dream was accompanied by a very traumatic "adverse effect" - when I touched anything in the dream it felt like shards of broken glass cutting my hands; if I set foot on the ground all the same happened to my feet (very painful indeed)
Has anyone ever experienced similar things in the dreams? May be there are some explanations? Thanks!