Ever wonder why your shoulders feel rounded after hours of working at a desk or when lifting at the gym? It’s not always your chest muscles to blame. Your rear delt—the rear deltoid muscle at the back of your shoulder—is often the forgotten hero when it comes to posture, strength, and injury prevention. In fact, many people don’t even know it exists until they experience shoulder pain or tightness. Surprise!
The rear delt plays a crucial role in shoulder stability and balance, working alongside other muscles in the shoulder complex to allow you to lift, push, and pull with strength and precision. Strengthening your delts not only helps you improve your posture but also makes sure you don’t end up with imbalances that could lead to long-term injuries. Now, let’s dive into how to take care of this often overlooked muscle and make it work for you.
Table of Contents
Understanding the Anatomy of the Rear Delt
- Location and function of the rear delt
- Its role in shoulder movement and stability
- The importance of delt strength for overall shoulder health
- Common reasons for delt weakness
The rear delt is one of the three parts of your deltoid muscle, located at the back of your shoulder. While the front and middle deltoid muscles help with lifting your arms up and out to the sides, the delt works in the background, responsible for pulling your arm backwards and rotating it outward. This means the delt is a key player in many movements that involve pushing, pulling, and stabilising your shoulders.
However, it’s all too easy to neglect this muscle, especially if your workouts focus heavily on chest and shoulder pressing movements. Many people don’t realise they’ve been ignoring their delts until they start experiencing tightness or shoulder pain, or even notice that their shoulders are rounding forward. In many cases, the front deltoids and chest muscles are overworked, while the rear delt is left weak. This imbalance can lead to poor posture, discomfort, and a higher risk of injury.

Strengthening the rear delt not only ensures your shoulder muscles work in harmony but also helps maintain shoulder joint health, reduces the risk of impingements, and balances out overdeveloped front shoulder muscles. And, trust me, those days of rounded shoulders from too much time at the computer or heavy bench presses will be a thing of the past.
Signs of a Weak Rear Delt and Why It’s a Problem
- Common symptoms of weak rear delts
- The impact of weak delts on posture and shoulder pain
- How weak delts affect your workouts
- Shoulder injuries that can result from delt weakness
Do you ever catch yourself in the mirror and think, “Why are my shoulders so slouched forward?” That’s a classic sign of weak rear delts. In fact, there are a few dead giveaways that your delts aren’t pulling their weight, so to speak. These include rounded shoulders, discomfort or tightness in the front of the shoulder, and even difficulty maintaining proper form during exercises like rows or overhead presses. If this sounds familiar, you’re not alone.
Weak rear delts can wreak havoc on your posture. This isn’t just about looking hunched or slouchy; it’s about how your body functions. When your delts are underdeveloped, the front of your shoulders might get overworked to compensate, leading to a chain reaction of muscle imbalances. Not only does this create tension and discomfort, but it can also result in serious shoulder injuries, such as rotator cuff impingements or even tears.
In the gym, weak rear delts can limit your progress. When your delts don’t have the strength to stabilise your shoulder during pressing or pulling exercises, your larger muscle groups, like the chest and lats, can take over and lead to overuse injuries. What’s more frustrating is that your lifts might plateau, since you can’t generate enough power without the delt’s support. So, if you want to push through to the next level, getting your rear delts on board is non-negotiable.
How to Train Back Width vs Thickness
Best Exercises to Target Your Rear Delt
- Rear delt flys
- Face pulls
- Reverse pec deck machine
- Bent-over rows with a focus on the delts
Let’s get down to business—what can you do to target your rear delts effectively? It’s not enough to throw a few sets of delt flys into your routine and call it a day (although it does help). You need consistency and technique. But don’t worry, it doesn’t take hours in the gym. You just need the right moves.
Rear Delt Flys:
This is a classic and highly effective exercise. You can perform it using dumbbells, cables, or even resistance bands. With your knees slightly bent, lean forward at the hips until your torso is nearly parallel to the floor. With your arms hanging down, lift your weights out to the sides, focusing on squeezing your shoulder blades together at the top of the movement. This isolates the rear delts beautifully.
Face Pulls:
Another killer move for the delts, face pulls are performed using a cable machine. Set the pulley to face height, grab the rope attachment, and pull it towards your face, focusing on keeping your elbows high and wide. This one works not only the rear delts but also the upper traps, making it a double win for shoulder stability.
Reverse Pec Deck:
If you have access to the pec deck machine at your gym, use it! Most people use this machine for chest exercises, but when seated facing the pad, it becomes a powerful rear delt exercise. Adjust the seat so that your arms are at shoulder height when holding the handles. Focus on squeezing your shoulder blades together as you bring the handles out and back, keeping the movement controlled.
Bent-Over Rows:
This is one of those exercises where a small adjustment can make a big difference. By shifting the focus to your upper back and delts, bent-over rows can become a staple rear delt exercise. Using either a barbell or dumbbells, bend at the waist with your chest parallel to the floor. Instead of rowing with your elbows close to your body (which targets the lats), flare your elbows out to the side to shift the emphasis onto your delts.
Adding these exercises to your routine two to three times a week will do wonders for your rear delts. Don’t rush the reps—use slow, controlled movements to really engage those muscles.
Read Also: How to Grow Your Delts Fast (4 Exercises You’re Not Doing)
Rear Delt Workout Tips for Maximum Gains
- Frequency and volume considerations
- The importance of mind-muscle connection
- Recovery and avoiding overtraining
- Combining rear delt work with other upper body exercises
So, you’ve got the exercises down—now, how often should you be working your rear delts? For most people, training rear delts two to three times per week is a good balance. They’re a relatively small muscle group, so they don’t need endless sets or massive volume to grow. In fact, trying to blast them every day could lead to overtraining, which can be counterproductive.

When working delts, focus on the mind-muscle connection. If you just swing weights around, you won’t be activating the muscle as efficiently. Instead, slow down your reps and think about squeezing your rear delts on every lift. This isn’t about using the heaviest weights you can find—it’s about targeting the muscle.
Recovery is key. Like any other muscle, your rear delts need time to repair and grow stronger after a workout. Make sure you’re giving them at least a day between heavy sessions. Pairing some delt exercises with back or shoulder workouts is a great strategy, as these muscles work together during pulling and lifting movements.
Back Exercises to Build Muscle and Strength
Common Mistakes to Avoid When Training Your Rear Delt
- Overusing front delts during rear delt exercises
- Neglecting proper form in rear delt flys and face pulls
- Using too much weight and compromising technique
- Ignoring mobility and flexibility work
Believe it or not, there are quite a few mistakes people make when trying to build their rear delts. One of the biggest is over-recruiting the front deltoids during rear delt exercises. It’s easy to let your stronger front delts take over, especially when you’re using heavier weights. To avoid this, keep your focus on keeping the movement slow and controlled, with an emphasis on isolating the delts.
Another common mistake is rushing through delt flys and face pulls without paying attention to form. If your arms are flailing or you’re swinging the weights, you’re not doing yourself any favours. Keep the movement precise and controlled, and lower the weight if necessary. It’s better to use lighter weights and engage the muscle properly than to swing around heavy dumbbells.

And, don’t forget about mobility and flexibility work. If your shoulders are too tight, it can be hard to engage your back delts properly. Adding a few shoulder mobility drills to your warm-up or cool-down routine can make a big difference.
Conclusion
Strengthening your rear delt might seem like a small detail, but it’s actually a game-changer for your overall shoulder health, posture, and performance in the gym. Whether you’re looking to avoid injuries, improve your posture, or break through a plateau in your lifts, focusing on your delts is essential. With a solid mix of exercises, attention to form, and consistency, you’ll start to see and feel the benefits of well-developed rear delts in no time. Don’t forget to adjust your routine based on your body’s needs and always listen to what your shoulders are telling you—sometimes, they just need a little extra love.
Read More: 8 Top Crossfit Shoulder Workouts to Improve Strength and Mobility
This content is originated from https://www.boxrox.com your Online Magazine for Competitive Fitness.