Start on your hands and knees with your hands under your shoulders and knees under your hips.
Tighten your abdominal muscles, and round your back, looking down towards your knees.
Lower your buttocks back onto your heels, stretching your arms out ahead of you.
Return to the starting position, moving your gaze to look ahead and arch your back.
Drop your hips forwards and onto the floor, further extending through your back and moving your gaze up towards the ceiling.
Return to the start position and continue.
Allow the movement to the flow.