Book front leg on a mat
Book front leg on a mat is a basic exercise of the spiral stabilization method. Execution: leg on a mat. Equipment: rope, mat.
Starting position: Stand on one leg facing the rope handle. The other leg rests on a mat in front of the body.
Breathing in, straighten up. Keep your pelvis and lower spine aligned.
The full procedure, a video with voice guidance and what to watch out for are in the Spiralista app.