How to Choose a Personal Trainer

To choose a personal trainer, match four things to your goal: a recognised qualification (in the UK, a Level 3 certificate and registration with CIMSPA), real experience with people in your situation, a coaching style you will actually stick with, and a price and format that fit your week. Book a trial session before you commit to a block, and fill in a short health questionnaire first so your trainer can plan safely around any medical conditions. Get those right and the rest — results, motivation, value for money — tends to follow.

Start with the goal, not the gym

The best trainer for a marathon runner is rarely the best trainer for someone returning to exercise after an injury, or a new parent with 30 minutes three times a week. Before you compare anyone, write down what you want and when you want it by: lose weight, get stronger, move without pain, train for an event. A good trainer asks for exactly this in the first conversation. If they launch into a sales pitch before asking what you are trying to do, that tells you something.

Check the qualifications — and the insurance

In the UK, a personal trainer should hold at least a Level 3 Diploma in Personal Training and be registered with CIMSPA (the Chartered Institute for the Management of Sport and Physical Activity), the sector's professional body. They should also carry public liability and professional indemnity insurance. These are not nice-to-haves; they are the baseline that protects you if something goes wrong. Ask to see them — a professional will share them without hesitation. On Trainerwise, qualifications and specialisms sit on each trainer's profile, so you can check before you message.

Get screened before you start

Before your first session, expect to complete a Physical Activity Readiness Questionnaire (a PAR-Q) or similar health screening. It is a short form covering heart conditions, blood pressure, injuries, pregnancy and medication. This is not box-ticking: it tells your trainer how to load your sessions safely, and it flags when you should speak to your GP before starting. If a trainer is happy to put you through a hard session without ever asking about your health, walk away. Safe programming starts with knowing who they are training.

Match the format to your life

In-person training gives you hands-on coaching and accountability, and suits anyone learning new movements or lifting heavier. Online coaching usually costs less, fits awkward schedules, and works well once you know the basics or train at home. Many trainers offer a mix — in-person to learn the lifts, then a lighter online check-in to keep you honest between sessions. The right answer is the one you will keep doing in week six, not the one that looks most impressive in week one. Think about location, travel time, and whether you need a fixed weekly slot or the flexibility to move sessions around a busy week.

Understand what it costs

Personal training rates vary by city, experience and format, so compare a few trainers rather than fixing on one figure. What matters more than the headline rate is what each session includes — programming, check-ins between sessions, nutrition guidance — and whether you are buying single sessions or a block. On Trainerwise, every trainer prices per session, so you can compare like for like. Booking through the marketplace adds a 10% platform fee, which covers secure payment, messaging and reviews; if a trainer brings you on as a direct client, no fee applies. There is no charge to browse or to set up an account.

Use trials and reviews

A trial or taster session is the single best filter. It tells you whether the trainer explains things clearly, watches your form, and treats your time as theirs to earn. Read reviews from clients with goals like yours, and notice whether the trainer replies to messages promptly — responsiveness before you pay is a fair guide to responsiveness after. A few warning signs are worth heeding: a trainer who guarantees a specific result by a specific date, pushes a large block of sessions before you have trained together once, or cannot explain why a session is built the way it is. None of those are about price; they are about whether the person in front of you treats coaching as a profession. Take your time here — the right trainer is worth a few extra days of looking.

Ready to find yours?

Set your goal, shortlist two or three trainers whose qualifications and style fit, book trials, then pick the one you would happily train with for months. Browse trainers on Trainerwise, see how Trainerwise works, or check Trainerwise pricing to get started.