How to Choose the Right Personal Trainer (and Avoid the Common Mistakes)

Starting a new fitness chapter—whether it’s building strength, improving swimming performance, or getting back on track—can feel overwhelming. I’ve coached enough swimmers and athletes over the years to know: most people don’t fail because they’re lazy. They fail because they’re unsure where to begin.

That’s where a skilled personal trainer comes in. But with so many options out there, how do you actually choose the right one?

Let me walk you through the process.

5 reasons you need personal coach

Why Work with a Personal Trainer?

A personal trainer is more than just someone who yells encouragement while you do burpees. The right coach is a guide, an accountability partner, and—if they know their craft—a performance multiplier.

Here’s what a good trainer helps you do:

• Set realistic, measurable goals that keep you focused

• Design a customized program tailored to your needs (not a cookie-cutter plan)

• Learn proper form and movement patterns to avoid injury

• Build momentum, especially when your motivation dips

• Push past sticking points and break performance plateaus

Whether you're working on general fitness or dialing in your swim training, that kind of support makes all the difference.

Where to Find a Trainer That Suits You

Your choice of trainer should fit your training environment. Ask yourself: Where do I want to train?

Local Gyms and Studios

Big-box gyms often offer personal training packages, but results vary. Ask about the trainer’s credentials and specialties—especially if you’re looking for swim-specific support or strength programming.

In-Home Sessions

Some trainers will come to you. This is great if you prefer privacy or have a small home gym setup. Just make sure the trainer is comfortable programming around limited equipment.

Outdoor or Pool-Based Coaching

Swimmers and triathletes—this is where you want someone with sport-specific experience. Whether you’re working on technique or fitness conditioning, a trainer who understands pool dynamics can help you transfer land strength to water performance.

Online Personal Trainers

Virtual training isn’t just for pandemic times anymore. If you need flexible scheduling or want to work with a coach outside your zip code (say, a trainer who specializes in swimming performance), this could be a great fit.

What to Look for in a Personal Trainer

All trainers are not created equal. Here’s how I help my clients filter the good from the not-so-good.

1. Certified, Qualified, and Professional

Always check for certifications from reputable organizations like:

• NSCA – Especially valuable if your trainer is CSCS-certified (great for performance training).

• NASM – Strong in corrective exercise and assessments.

• ACSM – Focused on health and wellness across various populations.

2. Relevant Experience

If your goals include improving swim technique, injury prevention, or getting stronger for open water, make sure they’ve worked with athletes like you. A track record matters.

Ask:

• Have they coached swimmers?

• Do they understand the demands of your sport?

• Can they adapt training based on your strengths and limitations?
  

3. Communication and Coaching Style

This one’s personal. You want someone who gets you. Some athletes thrive on drill-sergeant energy. Others need encouragement and technical precision. A great coach meets you where you are - and helps move you forward.

4. CPR, AED, and Liability Coverage

Every trainer should carry professional liability insurance and be CPR/AED certified. It’s a non-negotiable in this field.

Questions to Ask Before You Commit

Don’t be shy. This is your investment - treat it like hiring a key teammate.

Here are five must-ask questions:

1. What certifications and education do you hold?

2. How long have you been coaching, and who have you worked with?

3. Can you share any testimonials or references?

4. What’s your approach to progress tracking and goal-setting?

5. Do you offer a trial session?

👉 Pro tip: That first session should feel like a partnership, not a sales pitch.

Don’t Forget About Location

It sounds obvious, but the best trainer in the world won’t help if they’re an hour away. Choose someone who trains near your:

• Gym

• Home

• Office

• Pool or aquatic center (for swim-focused coaching)

Convenience fuels consistency - and consistency is what builds results.

Common Mistakes to Avoid

Let’s save you time, money, and frustration.

Choosing Based on Price Alone

Cheaper doesn’t mean better. A $25/session trainer who guesses their way through your plan is far more expensive in the long run (especially if you get injured).

Falling for Instagram Hype

Just because someone looks great in a reel doesn’t mean they understand periodization, energy systems, or biomechanics. Choose substance over flash.

Skipping the Trial

Think of it like a test swim. You wouldn’t buy a wetsuit without trying it on, right?

What Should a Good Trainer Actually Do?

Here’s what you should expect from a great trainer - especially one who understands the demands of swimmers or hybrid athletes:

• Functional movement assessments

• Tailored programming that evolves as you progress

• Evidence-based techniques with real-world applications

• Sport-specific dryland training if you're a swimmer or triathlete

• A clear plan for tracking progress and making adjustments
  

Let’s Build Your Foundation

Choosing a personal trainer isn’t just about finding someone who can coach - it’s about finding someone who can coach you.

If you’re ready to build strength with purpose, swim with better form, and feel confident in your body again, take that first step. You don’t need to figure it all out alone.

Let’s Talk

Schedule your first session today and let’s build your best swim yet.