How would you paraphrase the following text?
I couldn't sleep last night because I was worrying about the upcoming test.
Last night, I was unable to fall asleep because my mind was preoccupied with concerns about the impending exam.
Complete the following task based on the instruction and optional input provided.### Instruction:
How would you paraphrase the following text?

### Input:
I couldn't sleep last night because I was worrying about the upcoming test.

### Output:
Last night, I was unable to fall asleep because my mind was preoccupied with concerns about the impending exam.