Japanese students synchronized jump rope

A massive group of japanese students, about 50+ line up in rows of 3-6 students across and once they get the signal to start, they all jump through the rope row after row. That's about 10 rows of students going one after the other, and doing 2 full figure 8s until they stop and relish in their great achievement! Watching the 2 students who are swinging the rope is also rhythmic to see the perfect timing of each skip.