Step by step instructions
Grab a dumbbell in left hand and get into a low lunge position (try to bring back knee only a few inches above the floor) with left leg forward, right arm extended up by ear, and left arm down by side.
Brace abs in tight and bend at the waist, reaching left hand to the floor, tapping the end of the dumbbell to the ground, looking up to right hand. Return to start and repeat. Do all reps on the first side, then repeat on the other side to complete the set.