This asana is so-named because it represents the leap Hanuman made from the southern tip of India, as described in the epic poem, the "Ramayana." As such, it symbolizes taking a leap of faith and overcoming hurdles.
Traditionally, ardha Hanumanasana is believed to stimulate both the muladhara (root) and svadisthana (spleen or sacral) chakras. Opening the muladhara chakra grounds the individual, providing the inner stability needed for personal growth. Activating the svadisthana chakra - the center of creativity, pleasure and enjoyment - promotes focus, productivity and inner acceptance.
Ardha Hanumanasana is believed to improve the flexibility of the legs (particularly the hamstrings), open the hips, relieve sciatica pain, tone the reproductive organs, stimulate the abdominal organs, reduce stress and fatigue, and improve overall balance and alignment.