When I stay up late, I feel really tired and groggy the next morning. It's hard to get out of bed, and my mind feels foggy. I usually need extra coffee to wake up properly.

After staying up late, I find it hard to focus on my work or studies. I procrastinate more and get less done, which makes me regret staying up late.

If I don't get enough sleep, I feel more irritable and easily annoyed by small things. I prefer to be alone because my patience is shorter than usual.