By detecting the variation in the light over time, it’s possible to pick up your pulse, too. Getting this data out of the sensor is remarkably easy. One need only hook it up to a suitable ...

A Maryland native and wanderer who has lived across the U.S. from North Carolina to SoCal, Patrick Clarke graduated from Towson University with a B.S. in journalism. He previously worked for Bleacher ...

Sleep apnea is the most common cause of oxygen desaturation during sleep. ODI is measured by a pulse oximeter, which is a device typically placed on the fingertip that shines a red light on the skin ...