Start in a kneeling position with your hands under your shoulders, and knees under your hips.
Have a resistance band looped around both wrists.
With your hands shoulder-width apart, there should be some tension in the band.
Tuck your toes under, and lift your knees off the floor.
Crawl side to side, ensuring you keep your knees off the floor.
Try to keep your back straight throughout this movement.