The execution of seated Kūrmāsana: the heels at the perineum, the feet between the thighs. It is similar to other postures but with emphasis on withdrawal and contraction.

The body curls like a tortoise retracting its limbs inside its shell. This contraction contains energy, preventing its dispersal.

For the modern practitioner, it is a stable and accessible meditation posture. The foot position stimulates the perineum and helps maintain alertness during long sessions.