7 Things every PT should know about the shoulder

If you're guessing on shoulders, your clients can tell. Even if they're too polite to say it.

The shoulder is the most asked-about joint in the gym. It's also the one personal training qualifications usually cover in about two slides. That gap is the one nobody talks about — and it's the one I want to talk about today.

This isn't a personal failing. The qualification wasn't designed to make you a shoulder specialist. But the gap exists, and the way most coaches fill it is by pulling drills off Instagram, defaulting to band pull-aparts, or quietly modifying the programme until the issue goes away.

I'd like to tell you it works until it doesn't. Honestly? I'm more confident it doesn't work at all.

Here are seven things most coaches don't know about the shoulder, grouped into the three patterns we see again and again.

The lies you've been told about the shoulder

"Tight" is the most overused word in gym shoulder talk. A shoulder that doesn't want to go overhead is usually not tight; it's protecting itself. The body protects what it doesn't trust. Stretching it harder doesn't unlock anything; it just forces it into the place it doesn't want to go. The answer, almost always, is stability and load. Not mobility.

The rotator cuff is not a band pull-apart problem. It's a dynamic stabilising system designed to handle real load through real ranges of motion. Treating it like four little muscles to "activate" with a yellow theraband at the start of every session misses the point and bores your client. They disengage.

You can't fix a shoulder with shoulder exercises. T-spine, scapular control, hip drive, core function. The shoulder transmits force. It doesn't generate it in isolation. If those upstream pieces don't work properly, the shoulder tries to pick up the slack and pays the price. Most "shoulder rehab" content online ignores this entirely. Which is why most "shoulder rehab" doesn't work.

Want the full breakdown of all seven? I walk through each one in detail in the video below — including the two most expensive misunderstandings about pain in personal training, and why most coaches are getting instability completely wrong.

Where the line really lives

Most coaches treat scope of practice like two cliff edges separated by a crevice. Coaching on one side, clinical on the other, don't cross it.

In real life, there's a bridge. Coaching's at one end, clinical's at the other, and the bridge is "compromised but not entirely broken" — which is where most of your work happens.

What separates a good PT from a guessing one is knowing where on that bridge each case sits, and what the right action is for that spot.

Knowing the difference isn't above your pay grade. It IS your pay grade.

Two failure modes here. The under-refer: sending a client into territory that needed a clinician. And the over-refer: washing your hands of every shoulder twinge with an "I don't do pain" attitude. That's not safer. Your client just goes back to bench pressing on Monday anyway, except now you've removed yourself from the only position that could actually help.

The skill isn't refer-or-don't. The skill is knowing which case is which.

You're already in the room

This is the part most coaches miss. You're already the person they trust. Your clients ask you before they ask their GP, before they book the physio, maybe even before they ask ChatGPT. That's not a burden. That makes you the most valuable link in the chain.

You see them three times a week. The physio, if they're lucky, sees them every two weeks. With the right knowledge, you can be the most influential professional in their recovery by a long way. Without it, you're guessing in a position of authority. Those are very different jobs.

The point of all this isn't to make you scared of shoulders. It's to make you good at them.

SPEND A DAY WITH US AND CLOSE THE GAP

I'm running a one-day Shoulder Reconditioning Method workshop with the PFCA on Thursday 14 May 2026 at PFCA HQ in Altrincham. £249 for the day, hands-on the whole day. You'll assess real shoulders, interpret real cases, and make real programming decisions — and walk out with an assessment framework, a reconditioning method, and a toolbox of progressions you can use on Monday morning.

If you're tired of guessing, this is the day to stop.