This workout is designed to strengthen the muscles of the upper back and improve postural alignment, vital for both everyday activities and athletic endeavors. The sequence includes four targeted exercises: Lying Prone W to Y, Bodyweight Lying Prone Ys, Bodyweight Lying Pulse Rows, and Lying Prone Ts, all performed as straight sets with 4 sets of 10 repetitions each.

Starting with the Lying Prone W to Y exercise, you will develop scapular stability and shoulder mobility by transitioning from a 'W' position to a 'Y' without adding external weight. This motion emphasizes the importance of shoulder girdle control and works the rotator cuff muscles. Next, moving into Bodyweight Lying Prone Ys will further engage your upper back, specifically targeting the lower trapezius muscles to help correct rounded shoulders.

The third exercise, Bodyweight Lying Pulse Rows, introduces dynamic movement to the workout as you perform small, pulsing rows. These will activate the middle trapezius and rhomboids, critical for retracting the scapulae. Lastly, the Lying Prone T will cap off this session, focusing on the rear deltoids and further challenging the entire postural musculature.

Together, these exercises will enhance muscular endurance, promote a healthy upper-back posture, and create a foundation for more complex movements. Remember to initiate each repetition with controlled movement, maintaining a neutral neck and spine throughout the workout. It is recommended to rest for 30-60 seconds between sets to ensure muscle recovery while maintaining workout intensity.