Most guys spend years building their chest and biceps, but still don’t look good in a t-shirt.
That’s because they’re building the wrong muscles.
After coaching thousands with suspension training, I’ve discovered 5 muscles that actually control how you look in a t-shirt…
So in this post, I’m going to show you the 5 TRX moves that build those muscles…
So you can look great in any T-shirt you wear.
To start, let’s build the one muscle that instantly makes you look broader.
Don’t have time to read the post in full? Then watch the video below to learn the 5 TRX Exercises that will CHANGE how T-shirts fit you…
Table Of Contents
Exercise 1: Broad Torso for T-shirt Hang
Think of your shoulders like a coat hanger
The wider the hanger, the better your t-shirt hangs.
Your middle shoulder muscles create that width…
so when you build them up, your shirts fit better AND your waist looks narrower.
And here’s the bonus: strengthening them also protects you from rotator cuff injuries
But how do you build your middle shoulder muscles using a TRX?
Let me show you, watch this video from 07:45…
TRX T-Shape exercise:
- Grab the handles and lift your arms into a T-shape.
- Keep a slight bend in your elbows, shoulders centered, not pinched back.
- Walk forward to create tension, then slowly lower down over two seconds.
- Stop before your hands come together. Go too far, and you’ll hang through the joint, losing tension.
- Pull back up into that T-shape over two seconds, driving the back of your hands toward the outer walls.
- At the top, keep driving outward to squeeze your shoulders
- Hold for two seconds.
Keep your shoulders centered, not retracted back.
That’s what maintains middle shoulder tension.
Next, let me show you how to build arms that look defined in sleeves…
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Exercise 2: Sleeve Filling Arms
Most guys treat their arms like an iceberg, only training what they see in the mirror…
Their biceps.
But the real size is hidden underneath…
Your triceps make up two-thirds of your upper arm mass.
Developing them creates that horseshoe shape on the back of your arm that makes every sleeve look filled out…
Plus, strong triceps protect your elbow joints from wear and tear.
But how do you build that horseshoe?
Let me show you…
TRX Close Press exercise:
- Get the straps over your shoulders with an overhand grip
- Atraighten your arms out in front of you so you’re standing upright.
- Now push down and away. You should feel the back of your arms wake up, that’s your triceps firing.
- Bend your elbows and slowly lower yourself down over 2 seconds.
- Once your arms are fully bent, push down and away by squeezing your triceps to fully straighten your arms over 2 seconds.
Once you get to the top, really focus your mind on squeezing your tricep muscles extra hard for a two-second hold.
You should feel that lateral tricep head popping.
That’s what creates the horseshoe definition.
Next, let me show you how to stop looking hunched forward in every t-shirt you wear…
Exercise 3: Upper Body Thickness
Think of your shoulders like a tug-of-war.
Most guys are front shoulder dominant because of all those pressing exercises…
Which pull their shoulders forward into a slouch.
But your rear delts are the counterweight that pulls you back upright so you don’t look hunched.
Plus, they protect your shoulders during overhead movements as you age….
But how do you strengthen them to balance the tug of war?
Let me show you…
TRX Facepulls exercise:
- Start with the handles at nose level, shoulder blades pulled right back.
- Walk your feet forward just a touch to create a very small angle.
- Slowly lower yourself back down over 2 seconds, resisting gravity.
- Stop before your arms straighten and you fall into a hang, or you’ll lose tension in the rear shoulder muscle.
- Pull the handles toward your face at nose level to come back up over 2 seconds.
- As you reach the top, rotate your knuckles upward and squeeze your shoulder blades together
- Hold it for 2 seconds
The key is maintaining tension on that rear delt throughout.
Next, I’m going to show you the number one exercise that creates that athletic V-shaped look.
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Exercise 4: V-taper Back
Have you ever noticed an Olympic swimmer’s back?
That wide-at-the-top, narrow-at-the-waist thing look
That’s your lat muscles at the sides of your back.
And they’re the key to that athletic V-shape that makes everything fit better….
Plus, strong lats stabilise your spine, reducing lower back pain as you age.
But how do you build them and the V-shape torso?
Let me show you…
TRX Reverse Grip Row Exercise:
- Grab the straps with your palms facing upward, elbows pulled back, chest out, and lats tight.
- Create a slight angle, then slowly lower yourself down over 2 seconds.
- As you reach the bottom, actively push your arms forward to stretch your lats. Don’t just fall into a hang or you’ll lose tension
- Once you feel that deep stretch, drive your elbows down and back alongside your body to pull up over 2 seconds.
- At the top, continue driving your elbows back as hard as you can to squeeze your lats
- Hold this squeeze for 2 seconds.
Next, let me show you the most overlooked muscle for looking powerful in a t-shirt…
Exercise 5: Strong Neck line
Picture an NFL linebacker in a t-shirt next to a marathon runner.
Both are fit, but only one has that thick, powerful neckline, where the neck meets the shoulders.
That’s the upper traps, and they scream strength…
Plus, building strong traps can actually help relieve the neck and shoulder tension you get from hunching over a screen all day.
But how do you build that NFL neck line?
Let me show you…
TRX Y shape exercise:
- Grab the handles and lift your arms into a Y-shape.
- Keep your elbows slightly bent, but this time pull your shoulders right back.
- Slowly lower your arms down over 2 seconds.
- As you reach the bottom, stop before your hands reach eye level.
- Go too far and you’ll end up hanging, losing tension on your upper trap muscles.
- Drive your arms back up into a Y-shape by pushing your hands towards the ceiling.
- As you reach the top pulll your shoulder blades back and squeeze
You should feel you upper back muscles, your traps, burning.
So now you know the five TRX moves that fill out your t-shirt.
But here’s the problem…
Without a strong core, you’re building all this upper body muscle on shaky ground.
Because your form breaks down, your posture suffers, and you can’t transfer power through your body..
the foundation that makes everything else work.
Here’s to your Fitness Freedom!
Coach Adam, aka TRX Traveller
I hope you enjoy this post. If you want my help to build lean muscle & transform your body using a TRX suspension trainer anywhere –


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