Upward Dog is a great pose to improve posture, and strengthens the entire body, especially the core and buttocks. It stimulates internal organs and can help to relieve depression, fatigue, and symptoms associated with sciatica.
Modifying the pose by adding blocks lengthens the arms and allows for a better transition between Upward and Downward Facing Dog.
Upward Facing Dog with Blocks: How to Do it Step-by-Step
Tip: Keep the legs in line with the hips and the neck in line with the spine.