If you’ve ever rolled out of bed, and immediately bee-lined it to the treadmill cup-oh-buzz in hand, then you’ve unknowingly given fasted cardio a try. Working out on an empty stomach isn’t always ...

You've probably heard about it or even tried it: waking up early, with just a glass of water in your system, and hitting the pavement, hopping on a bike, or stepping onto the elliptical. The promise ...