In a recent Lucid Dream I was unable to control my enviroment. I was in a sewer running until I saw two stair cases. One above the other. I jumped on to the one infront of me and jumped again to grab the one above. I had my feet below the rail and my hand still holding on. Then I was unable to move. I wasnt sure why but everytime I tried to move my finger or arm or anything it didn't move. Why was I unable to move and control my envrioment?