Exercise guide
Standing External Rotation Slide With Towel
- Beginner
- Isolation
- Rep-based
- Shoulders
- Upper arms
This isolation exercise strengthens the infraspinatus and teres minor, which are crucial for shoulder stability and injury prevention. The towel provides smooth, consistent resistance against a wall to improve the mind-muscle connection with the rotator cuff.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Stand sideways to a wall with feet shoulder-width apart and a neutral spine.
- Bend your elbow to 90 degrees and tuck it firmly against your side.
- Place a folded towel between the back of your hand/forearm and the wall.
- Ensure your shoulder is pulled back and down, away from your ear.
How to do it
- Exhale as you rotate your forearm outward away from your body, sliding the towel along the wall.
- Keep your elbow pinned to your ribs as you reach your maximum comfortable range of motion.
- Inhale and slowly return the forearm to the starting position in front of your torso.
- Maintain a controlled 2-0-2 tempo, focusing on the rotation of the humerus (upper arm bone).
Form checklist
- Keep the elbow tucked; do not let it drift away from your torso.
- Avoid twisting your hips or torso to gain extra range.
- Maintain a 90-degree angle at the elbow throughout the set.
- Keep your wrist neutral and firm, not bent or floppy.
Pro tips
- Place a second rolled-up towel between your elbow and your ribs to ensure the elbow stays pinned.
- Focus on the sensation in the back of the shoulder blade rather than just moving the hand.
- Keep the movement small and precise; quality of rotation is better than quantity of range.
Make it harder
- Perform the exercise with a 3-second pause at the point of peak contraction.
- Slow down the return phase (eccentric) to 4 seconds to increase time under tension.
Frequently asked
- What muscles does the standing external rotation slide with towel work?
- The standing external rotation slide with towel primarily targets the deltoids and rotator cuff, and also works the biceps and forearms as secondary muscles.
- What equipment do you need for the standing external rotation slide with towel?
- The standing external rotation slide with towel requires no equipment — just your body weight.
- Is the standing external rotation slide with towel good for beginners?
- Yes. The standing external rotation slide with towel is a beginner-friendly movement and a strong foundation to build on.