How to Do Prone W Raises: Rear Delt Form, Tips & Variations

Of all the exercises in the YTW scapular series, the W raise is the one that most directly challenges the external rotators and rhomboids. The bent elbow creates a mechanical demand for outward shoulder rotation as you lift — the same motion that's weak in almost anyone who presses overhead regularly without balancing it with pulling. Get this one right and your shoulders will feel more stable in every other exercise you do.

Research on scapular rehabilitation consistently prescribes bent-elbow prone exercises like the W raise for their ability to load the rhomboids and middle trapezius while simultaneously demanding external rotation of the glenohumeral joint (Cools et al., 2007; Reinold et al., 2009). This combination makes it more rehabilitation-relevant than straight-arm variations for people with impingement or rotator cuff weakness.

If you already train prone Y raises and prone T raises, the W completes the YTW sequence by adding the external rotation component. The three together hit every plane of scapular stability in a single warmup sequence.

Quick Facts

Step-by-Step: How to Do a Prone W Raise

1. Lie face down and set your arms. Get on the floor face down (prone) on a mat. Bend both elbows to 90 degrees. Position your upper arms out to the sides at roughly shoulder height, and let your forearms point forward toward your head with your hands near ear level. From above, your body and bent arms spell a clear W.
2. Set your position. Brace your core and lightly squeeze your glutes. Rest your forehead on the mat or keep your gaze at the floor. Pull your shoulders down away from your ears — do not let them shrug up.
3. Lift your forearms off the floor. Drive your elbows back and externally rotate your shoulders simultaneously to lift your forearms off the mat. Think of pulling your shoulder blades into your back pockets as you do it. Your upper arms stay roughly in line with your shoulders — this is scapular retraction plus external rotation, not a shrug.
4. Squeeze and hold. At the top, actively squeeze your shoulder blades together. Hold 1 to 2 seconds. The work should be felt across the middle of your upper back — rear delts, rhomboids, and middle traps. If you feel it in the tops of your traps or neck, you are shrugging.
5. Lower with control. Take 2 to 3 seconds to return your forearms to the mat. Touch down lightly and repeat.

Common Mistakes (And How to Fix Them)

Shrugging the Shoulders Up

What it looks like: The upper traps hike toward the ears as the forearms rise off the mat.

Why it's a problem: Shrugging activates the upper trapezius instead of the rhomboids and rear delts. You get none of the intended benefit and reinforce the postural imbalances most people are trying to fix.

The fix: Before every rep, deliberately pull your shoulders down toward your back pockets and hold them there throughout the lift. If your traps keep taking over, reduce range of motion until the pattern corrects.

Losing the W Shape — Elbows Drifting Back

What it looks like: The elbows pull back behind the shoulders instead of staying out to the sides. The forearms end up pointing sideways instead of forward.

Why it's a problem: This converts the W raise into a rowing-type movement. Different muscle recruitment, different exercise.

The fix: Keep your upper arms perpendicular to your torso — out to the sides, not back behind you. Forearms stay forward toward your head throughout every rep.

Not Externally Rotating

What it looks like: The forearms lift but the palms stay facing the floor instead of rotating to face forward or slightly up.

Why it's a problem: The external rotation component is what loads the infraspinatus and teres minor — the most commonly weak muscles in the rotator cuff. Skipping it turns the W into a partial exercise.

The fix: As you lift, think of rotating your thumbs toward the ceiling. Your palms should end up facing the wall in front of you at the top of the movement.

Variations

Easier (Regression)

• Incline W Raise. Lie chest-down on a low incline bench with your arms hanging off the sides in the W position. The angle reduces the load, making it easier to feel the movement before adding the full floor version.
• Isometric W Hold. Lift your forearms to the top of the W position and hold for 10 to 20 seconds without moving. Builds endurance in the rear delts and rhomboids before adding reps.

Harder (Progression)

• Weighted Prone W Raise. Hold a pair of very light dumbbells — 2 to 5 pounds is plenty. The shorter lever arm of bent elbows means even small loads add substantial challenge.
• Extended Hold W Raise. Hold the top position for 3 to 5 seconds on every rep. No extra weight needed — the longer tension time is demanding enough.
• YTW Circuit. Flow from I raises to Y raises to T raises to W raises without resting. Full scapular warmup in one continuous sequence.

Programming Tips

• Sets x Reps: Beginner: 2×10–12 / Intermediate: 3×12–15 / Advanced: 3×15 with 2-second hold at top
• Rest Period: 30–45 seconds between sets
• Frequency: 2–4 times per week, or daily as a shoulder prehab warmup
• When in your workout: Before any pressing or overhead work. Pairs naturally with Y raises and T raises as the YTW warmup sequence.

FitCraft's AI coach Ty automatically programs W raises into your personalized plan based on your fitness level, goals, and posture needs. The app shows demonstrations of the exact arm angle and W position so you don't have to guess what it looks like from the outside.

When to Use the W Raise (And When Not To)

Use the prone W raise when:

• You spend hours at a desk and want to counteract rounded-shoulder posture
• You're warming up for pressing or overhead work and need to activate rear delts and rotator cuff first
• You have or have had shoulder impingement — the external rotation demand directly addresses the commonly weak external rotators
• You want to balance a program heavy in internal rotation (bench press, push-ups, overhead press)

Skip the prone W raise when:

• You have acute shoulder pain that worsens with external rotation — see a clinician before loading this movement
• You can't maintain the W shape without shrugging — fix the motor pattern first with isometric holds