It's notoriously difficult to pinpoint, biologically, whether an anti-depressant medication is working. Anecdotal evidence—how a patient describes changes in the way they're feeling—can be dismissed as resulting from the placebo effect. So it's exciting that scientists at the Medical College of Georgia have found a concrete way to customize the prescription of anti-depressants, as well as gauge their effects. The key is a patient's sleep habits. Patients wear a wristband—much like a fitness tracker—to measure their nighttime wakefulness. Information about when they're asleep vs. restless helps doctors determine which medications may work best for them. Would you wear a wristband in order to provide your doctor with this information? Where do you think "wearables" are going over the next ten years? Will everyone be tracking everything? Let us know your predictions in the comments.