These will challenge you more than any dumbbell row. You'll be essentially rowing your bodyweight with one arm.
Don't let your shoulder shrug up, keep your core braced, and pull with control. You'll feel your core work double-time to stabilize the offset load. Your pulling muscles will also contract deeply. To make it easier, simply go flat footed or adjust your angle.
Extreme Performance Decline Syndrome (EPDS) sounds like a new social disease, but it really has to do with mid-set fatigue. Ever wonder why you can pump out 12 reps on the first set but then have trouble hitting 6 or 7 reps on the fifth set? Luckily, Joel Marion knows how to boost your performance.