Beware the Black Hole of Training

This is a Great and validated point to remember for elite training - ""It's simple. If you want to be your best, go hard and go easy," says Foster, "and don't go in the middle."

BEWARE!

ref: http://outsideonline.com/fitness/travel-ga-201012-bodywork-endurance-training-recovery-athletes-sidwcmdev_153019.html