Floride's dream interpretation perfectly explains your present situation. During the day, the "self" will get the upper hand, desperately suppressing the "self" to form a normal pressure, while all functions in the dream are relaxed, and the "self" will get the upper hand, thus venting the pressure during the day, which is manifested as recent atrophy, twists and turns, absurdity or fear. ...
You may have been thinking too much about the exam recently. ...