Start by creating a plank position, with both hands aligned beneath the shoulder joints. Keep the feet together.
In one motion, hop both feet outwards, landing about hip- to shoulder-width apart from one another.
Lightly hop both feet back to the center, with feet together, to reset.
Continue to hop feet in and out for the allotted time. Try to maintain an even line from the upper body, down to the feet, avoiding any rounding of the spine, or excessive movement of the hips rising up or falling towards the ground.