09/02/2026
Ever wonder why your coach sneaks rear delt flys into your program? 👀
They might look like a simple accessory movement, but they can do a lot for shoulder health, posture, stability, and overall upper-body strength.
Coach Harmony breaks down why rear delt flys deserve a spot in your training for this week’s .👇
Rear delt flys are an important accessory exercise because they strengthen the posterior deltoids, which are often undertrained compared to the front of the shoulders. Strong rear delts can improve both performance and shoulder health.
Key benefits include:
Improves posture: Rear delt flys strengthen the muscles that pull your shoulders back, helping counteract the rounded shoulders that can develop from sitting at a desk or doing lots of pressing exercises.
Enhances shoulder stability: Strong rear delts work with the rotator cuff and upper back muscles to help keep the shoulder joint stable during lifting and everyday movements.
Reduces injury risk: Balanced shoulder strength can decrease stress on the front of the shoulder and help reduce the risk of overuse injuries, especially for athletes and people who bench press or perform overhead movements frequently.
Builds a stronger upper back: The exercise also recruits the rhomboids and middle trapezius, improving scapular control and overall upper-body strength.
Boosts performance: Better shoulder stability and upper-back strength can support stronger pressing, pulling, Olympic lifts, throwing, and better positioning during carries.
Creates balanced shoulder development: Training the rear delts helps create more balanced shoulder development while helping prevent muscular imbalances.
I personally like the chest-supported version so I can really focus on those posture muscles! 💪