This posture transfers the circulation from one side of the body to the other, and then equalizes it-circulating fresh blood to each internal organ and gland to keep them healthy. Physically, it firms the abdominal wall and upper thighs, tightens upper arms, hips, and buttocks and improves the flexibility and strength of the lower spine. It develops balance and increases the size and elasticity of the rib cage and the lungs. Mentally, this pose helps develop concentration, patience, and determination.
Standing bow pulling posture is a beautiful pose and you can really build from the last pose. You must still concentrate on your standing leg and make sure your knee stays locked and your thigh is contracted.
When you kick your leg back make sure you do not sink back into your heel. Keep your body weight forward so you don’t over stretch your hamstring.
The quicker you can get your body down parallel to the floor the more cardiovascular benefits you will get. Don’t give up.