Fun find, GCM. Am I the only one that finds their bouncy-goose-step a little silly looking?
Now that you mentioned it…
…yeah, it does look silly.
According to Wiki it’s a unique marching step introduced in the ’90s, replacing the Soviet version. From the Guardian:
Natasha Darne, a personal trainer at LA Fitness in Holborn, London, tried to perform it in her studio after studying a video – and remains unconvinced. “It is really, really hard to do for a prolonged period. It’s tough on the hamstrings and you need excellent core strength and balance to maintain that upper-body stiffness. The action is also really bad on the knees and feet because it encourages you to slam your foot down hard on the floor. The North Korean soldiers certainly must do lots of stretching before they march.”