YTWL (shoulder blades)
Dose5 slow rounds of Y → T → W → L
How
Best of all is when you feel it in your lower trapezius: the lower part of the muscle between and below your shoulder blades. For now, do this instead of the prone T raise on your list: it switches on your back and shoulder blades with less risk of arching and straining your lower back. Sit on a bench or chair, feet flat, and set the pressure position: ribs down, pelvis level. Y: arms overhead, elbows straight. T: arms out to the sides, a little below shoulder height, thumbs and elbow creases turned out. W: elbows bent, thumbs pointing back, shoulder blades together. L: shoulders and elbows drawn back, elbows bent at 90°, thumbs turned out. In every letter, turn your upper arm out and let your shoulders drop, so your shoulder blades draw together and down. You should feel it around your shoulder blades, especially their lower part, not the tops of your shoulders. A little arching of your lower back is fine as long as you feel your back working (the video says so at 4:38), but tension in your lower back is not OK. Ideally, hold the pressure position throughout: belly drawn in, ribs down. If your lower back tenses up too much instead of your back doing the work, that points to tightness at the front of your chest: go back to the side-lying chest rotation (90-90) in Step 1, then try again. If your shoulders or neck tense up, go back to stretching first (for example, the pec minor stretch on your list), then try again. If your lower back hurts, set the YTWL aside for now, as the video says. If your shoulder hurts, set it aside too and let me know.