Do you have trouble sticking to workout regimens? Maybe you start off strong for the first couple weeks, but then you start missing them here and there until, eventually, you realize there's a you-shaped cavern in your couch. You're in good company. But there's a tool that our own bodies produce that might just be the…

The pinnacle achievement in active eyewear was once simply making a pair of sunglasses that were light and wouldn't shatter into your eyeballs. While that's still important, technology has obviously progressed. So what is the future, exactly? Heads-up displays? Augmented reality? Cybernetic retinal implants?

It's that time of year, when getting out of the city has never felt so good, escaping the salt-white concrete of winter and the waste-blown streets for the steadily-warming hills and forests outside town, stepping into the peripheral wilderness of the city for some early spring hikes. Gizmodo tied up its boots, donned…