Utthan pristhasana refers to lizard pose and its variations, which are advanced asanas. The advanced versions of lizard pose are flying lizard pose and twisted lizard pose.
Utthan pristhasana stretches and opens the hips, improves hip flexibility, stretches the hamstrings and quadriceps and strengthens the inner thighs and leg muscles.
The mental benefits of this asana include calming of the mind, stress relief and the release of emotions rooted deeply inside.
Utthan pristhasana activates the svadisthana, the second chakra. Svadisthana chakra is associated with creativity, confidence, survival instinct and a feeling of abundance.