This is an excerpt from Kundalini Postures and Poetry, by Shakti Parwha Kaur Khalsa.
Chivalry and fearlessness, inherent in this noble warrior stance,
Physical stamina and strength in feet, thighs, and arms enhanced.
Archer also puts pressure on the thigh bone,
Balancing calcium, magnesium, potassium, and sodium.
On the physical plane, we have lots of reasons for doing Archer Pose. It helps develop strength in the quadriceps and the intestines. The legs and knees are being strengthened. Outstanding physical stamina and strength are gained, while, remarkably, at the same time, there is an inner posture of feelings taking place that is equal inpower to the pure physical connection of feet to the ground.
Sometimes called the Hero Posture, Archer Pose develops courage. That is its special inner gift. Plus, it is said that the need for excessive sleep disappears!