Ardha padmasana is an ideal posture from which to practice pranayama (breath control), dharana (concentration) and dhyana (meditation). It keeps the body upright, while the position of the legs allow the posture to feel stable, supported and balanced. This asana allows the body to remain still for long periods of time so that the mind can focus. Practice of this pose will cultivate greater awareness and mindfulness, which has significant benefits for mental and emotional well-being.
In Kundalini yoga, ardha padmasana is highly regarded because it keeps the spine straight, which allows the energy of kundalini to rise, clearing any blockages.