Health
What is Sleep stages?
Segments of sleep such as REM, Core, Deep, and Awake tracked by wearables.
Learn this term every day on iPhone.
One hand-written term. A real workplace example. Thirty seconds before your day gets loud.
In real work
Sleep stages help describe architecture; one rough night is rarely clinically meaningful alone.
How is this different from Googling it?
Google gives a definition. Prompthaus pairs each term with how it shows up in standups, PRs, prompts, and design reviews—then quizzes you until the word sticks. One term a day on iPhone.