Much like hope, love and Coconut M&Ms, sleep is one of those things that is both hard to live with and impossible to live without. But unlike the first three, it's evidently possible to throw math into the whole "shut-eye" thing. Like it's bedside-based older brother , the newly-announced Zeo Mobile includes a SoftWave wireless headband that wraps around your grey matter as you sleep, reporting on how well your brain is shutting down. Instead of the custom base-station, the data is sent straight to your iOS or Android device and syncs up with the Zeo site to give you the inside skinny on your dreaming. Best of all, the device can wake you at the peak of a sleep cycle, rather than halfway through that dream about Björk and the melting clock. Of course, if you didn't already know that mainlining Red Bull until 3am isn't healthy, then perhaps you're beyond redemption.