Prone Y-T-W Raise

Move · Resistance Training · Movement, Typed Supps

Three arm positions in one exercise, each aimed at a different part of the muscle sheet that holds the shoulder blade.

Stage by stage

Set-up (Face down, load vertical): Lying prone makes gravity resist the arms directly, so the arc is hardest at horizontal.
During the set (Y for lower trapezius): Arms overhead in a narrow V align with lower trapezius fibres that most training misses.
The T and the W (T and W shift the pull): The T loads mid-trapezius and rhomboids; the W adds external rotation at the shoulder.
Weeks later (Position under overhead work): Better scapular control shows up as steadier positioning in pressing and overhead lifting.

Muscles trained

Primary: traps, upper back
Secondary: lower back, rear shoulders

Intensity

5 METs (Resistance (weight) training, squats, slow or explosive effort).

Time to effect

Weeks: Awareness of the upper back and shoulder blades — muscles most people rarely feel working directly — tends to sharpen within the first few sessions.
Months: Better scapular control here often shows up as steadier shoulder positioning during pressing and overhead work, where poor scapular movement is a common, easy-to-miss limiting factor.

Common myth

"This is too light to be worth doing — real shoulder training means heavier weight." In reality: The point of the Y-T-W raise is control and scapular activation, not load — very light weight (sometimes none at all) is standard, and adding heavy weight usually just recruits the wrong muscles.