From Five Hour Energy to ZzzQuil, there are  no shortages of substances legal, regulated and outright banned to help us mentally speed up or slow down. Unfortunately, virtually all of them include chemicals ...

Today, most wearable are focused on measuring the number of steps one takes per day. It’s a useful measure of daily activity, but there is far more to understanding one’s well-being. Prana looks like ...

A number of smartwatches and other bands can measure heart rate, but they’re generally focused on fitness activities. As previewed last month, Emvio is a specialized smartwatch that eschews apps and general ...