Samsung's mobile health app can now tell when you're stressed out
 

The Galaxy S5's heart rate sensor has mostly been handy for fitness gurus, but it's now helpful for the rest of us, too. Samsung has pushed out an update to S Health that uses the sensor to track stress levels; if your heart is racing after a bad day...

http://www.engadget.com/2014/05/26/s...=rss_truncated