Stage 2: REM Sleep

When You're Not Dreaming, But Still Not Awake

This is stage 2 of the sleep cycle, where your brain is still pretty much out of commission, but not entirely. It's like being in a state of suspended animation, like a frog on a lily pad, or a narcoleptic accountant on a couch.

• Brain waves: Delta waves, baby! The slow, high-voltage stuff.
• Body temperature: Still a little warm, still a little cozy.
• Eye movement: None. Just closed, like a clam.

From here, you'll either move on to stage 3: the deep, where you're basically a vegetable, or maybe stage 1: the light, where you're basically awake (but not really). Or maybe you'll just get stuck in a time loop and relive the same 10 minutes over and over again. The possibilities are endless!