Keep alternating like this until you complete the prescribed number of reps for each arm. (fitnessandpower.com)
Many perceive them only as stretching exercise, without focusing on progressive strength gains, and are willing to do same number of reps with the same weight in each next workout. (fitnessandpower.com)
However, there's a different element to judging this drill — a high number of reps is usually a sign of good endurance and cardio. (sbnation.com)