It is a mild inversion increasing blood flow to the brain and calming the nervous system.
Watch out for
Avoid this pose if you have ankle or knee injuries or problems with your blood pressure that prevent you doing inversions.
Avoid locking the standing knee.
Focus on stretching the front of the lifted thigh – keeping the hips square and level – rather than opening up the hip to get the leg higher.
If you are feeling steady in the pose try taking hold of the ankle with both hands.
Try Standing Splits at the wall, as Sandra demonstrates it in her Monkey up the wall class.
Try Standing Splits as part of a balance sequence moving from Uttitha Hasta Padangustasana to Warrior III to Standing Splits and then from here back to Uttitha Hasta Padangustasana with your hands on your hips.