The alarm goes off and you've only been asleep for three hours. You get out of bed and stumble toward the coffee pot for your dark roasted elixir. As you inhale the bold aroma, the fog in your brain begins to dissipate. You add a little cream – or maybe don't even bother – and start sipping. By the time you can see the bottom of your mug and you're reaching for a refill, the day has come into focus. You're ready for anything.
This mug has the answer for you!
When the mug is cold, you'll see how your brain looks before the infusion of caffeine. As you fill it up and the mug warms, the design changes to show your wide-awake, post-caffeine brain.
Here's the short story on the science of what's happening: