Well.

As Tiffany started to joint down some of the notes that the professor has sorted out, she raised her hand to answer the second question that she has just mentioned. "REM actually stands for Rapid Eye Movement which some of us would have experienced while they are sleeping,"she answered as she flicked through her book. "And usually people could recall their dreams better when they are experiencing REM." It was not a good thing though, at least to herself since it means that you did not have enough sleep that previous night. It's not a good sign when you can recall all the dreams you have made.