You’re in bed and can’t sleep. What’s the first thing you reach for? That decision could be impacting your waking life, too. Jaime Derringer, the founder of Design-Milk, teamed up with Simmons to trace bedtime behavior to personality types. Those of you who go straight for your iPhone might be workaholics or control freaks. A sleep mask is a good sign that you’re laid back and easy going. Follow the Z’s on the infographic below to learn what your midnight habits might say about you.