10 Signs of a Bad Personal Trainer (and What a Good One Does Instead)

Personal Training 8 min Read

Written by

Keith Hansen

When you’re paying for personal training, you deserve a coach who moves you toward your goals every session. The trouble is that if you’re new to fitness, it’s hard to tell a great trainer from an average one. These are ten red flags we look out for, and what a good trainer does instead.

Still choosing a trainer? Use this list alongside our 12 questions to ask when hiring a personal trainer.

The short version

  • Your session time should be coached training, not solo cardio.
  • A good trainer teaches you, explains the why, and keeps a record of every workout.
  • They show up on time, give you their full attention and correct your form.
  • They give evidence-based nutrition advice, not rigid rules.
  • If several of these red flags sound familiar, it’s fair to raise them, or to find a better fit.
Red flagWhat a good trainer does
1. Puts you on cardio for your sessionCoaches strength work; cardio is warm-up or homework
2. Rarely uses free weightsTeaches barbells and dumbbells safely
3. Insists on a set number of mealsFocuses on total food intake and habits
4. Often cancels or runs lateRespects your time and schedule
5. Seems distracted or unpreparedArrives with a plan built for you
6. Doesn’t keep a workout logTracks every session and progresses it
7. Relies on balance gimmicksUses stable exercises you can load
8. Hides behind jargonExplains things in plain language
9. Doesn’t explain the whyTeaches you so you get more independent
10. Just counts your repsWatches, coaches and corrects every rep

1. They put you on a cardio machine

Cardio matters, but you don’t need to pay a coach to watch you walk on a treadmill. If part of your session is spent on the bike or elliptical, it should be a short warm-up. A good trainer spends your time on the things that need supervision: technique, loading and progression. Cardio becomes homework you do on your own.

2. They rarely use free weights

Barbells and dumbbells are some of the best tools for building strength, muscle and coordination. A trainer who never uses them may not be comfortable teaching them. Machines have their place, especially early on, but a good trainer should be able to teach you the big lifts safely as you’re ready.

3. They insist you eat a set number of meals a day

Research hasn’t shown that eating six small meals “stokes your metabolism” compared with three larger ones. For fat loss, total calories and protein matter far more than meal timing. A good trainer helps you build habits that fit your life, instead of handing you rigid rules. Phrases like “metabolic fire” or “muscle confusion” are a sign to ask more questions.

4. They cancel or run late

Emergencies happen. But if your trainer regularly cancels, reschedules or shows up late, they’re not valuing your time or your investment. Consistency is the biggest driver of results, and that goes for your coach too.

5. They seem distracted or unprepared

Watch for a trainer who’s on their phone, chatting with other people, or making up the workout as you go. A good trainer arrives with a plan for your session and gives you their full attention for the whole hour.

6. They don’t keep a workout log

Your trainer should record what you do every session: exercises, weights, sets, reps and how it felt. That record is how they make your workouts progressively harder, and how they remember which tweak kept your shoulder happy. A trainer who wings it may leave you sore and tired, but your results won’t be as good as they could be.

7. They rely on balance gimmicks

Squatting on a wobble board or pressing on a BOSU ball makes an exercise harder, but harder isn’t the same as better. Unstable surfaces limit how much weight you can use, which limits strength and muscle gains. They can have a place in rehab under a clinician’s guidance, but they shouldn’t be the core of a strength program.

8. They hide behind jargon

“Amortization phase” and “femoral glide” might sound impressive, but a great coach can explain complex ideas simply. If you often leave a session confused about what you did and why, say so. A good trainer will change how they explain things.

9. They don’t explain the why

Part of a trainer’s job is teaching you. Over time you should understand why you do each exercise, how to do it well and how to progress it. A good trainer wants you to become more capable and independent, not more dependent.

10. They count reps for you

Counting out loud can help you grind through a hard set, but most of the time your trainer should be watching your form from different angles and coaching you through each rep. You’re paying for a coach, not a counter.

What to do next

If a few of these sound familiar, talk to your trainer first. Tell them what you want from your sessions. Good coaches welcome feedback. If nothing changes, it’s fine to look for a better fit.

How we coach at Seriously Strong Training

Every session at our gyms is 55 minutes of one-on-one coaching. Your program, workout history and at-home homework live in an app, with a video for every exercise. Our trainers meet with a senior mentor every week to review client progress. You can meet our coaches before you start.

Frequently asked questions

How do I know if my personal trainer is good?

A good trainer shows up prepared, tracks your workouts, teaches you proper form, explains why you’re doing each exercise and adjusts your program as you progress.

Is it OK to switch personal trainers?

Yes. If you’ve shared your concerns and things haven’t improved, finding a better fit is normal and fair.

Should a personal trainer give me a meal plan?

A good trainer teaches you how to make good choices, like hitting your protein and managing portions, rather than giving you a rigid plan. For medical nutrition needs, see a registered dietitian.

Looking for a trainer who checks every box? Book a free strategy session at our Tallahassee, St. Petersburg or Tampa gym.

Keith Hansen

Keith Hansen is the founder and owner of Seriously Strong Training. A former competitive wrestler from Clearwater, he studied business at Florida State University, became a certified personal trainer, and started SST in Tallahassee in 2014 with one idea: good coaching should teach people how to train, not just put them through a workout. Today he leads a team of coaches in Tallahassee, Tampa and St. Petersburg. Read Keith's full story.