Disclaimer: The information in this article is general in nature and is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your doctor or other qualified health professional before starting any exercise programme or with any questions you may have regarding a medical condition.
Personal training gives you tailored attention. Group exercise gives you a shared session with less individual time. Your goals, budget, schedule and preferred support should decide the fit.
Australia's movement guidelines focus on activity amounts and types, not one delivery format. Choose an option you can attend regularly.
The main difference is individual attention
AUSactive says registered personal trainers can provide a tailored assessment, programme, supervised sessions and reviews. They may also support clients between sessions.
A registered group instructor leads people with mixed ages and fitness levels. The official group scope describes complete sessions with limited individual interaction. Instructors can demonstrate movements and offer changes, but the class is not one person's plan.
Group exercise suits a shared routine

Group classes offer a set time, a planned session and other people in the room. You do not need to design each workout yourself.
A 2025 randomised trial involved 976 university students aged 19 and 20 in Croatia. The group programme produced a larger activity increase than individual exercise over the study period. This does not prove group classes work better for every person. The participants were a narrow age group, and the study tested one organised programme.
The trade-off is attention. An instructor must watch the whole room. Before joining, ask about class size, experience level and movement options.
Personal training fits specific goals

Personal training fits when you want a programme based on your starting point and progress. It also gives you close feedback while learning unfamiliar movements.
Ask how each session supports your goal and how progress will be reviewed. Compare the monthly price, cancellation terms, session length and appointment times.
Compare the full weekly setup
Start with local fitness groups and trainers. Compare the details that affect attendance and value:
- What is included in the fee, and what costs extra?
- How large is the class or how long is the private session?
- Can the instructor change movements when needed?
- What happens if you miss or cancel a booking?
- How will progress be reviewed over the next month?
Compare the same period, such as four weeks. This puts different passes and packages on equal terms.
Qualifications matter in both formats
AUSactive lists different requirements for each role. Registered group instructors need a relevant Certificate III pathway plus current first aid and CPR. Personal trainers need a Certificate IV, diploma or relevant degree pathway, plus current first aid and CPR.
Ask about registration and experience. Check whether both match the activity, your goals and any movement changes you need.
A mixed approach can work
The formats can overlap. A trainer may lead group sessions, while a client combines private reviews with regular classes.
An Australian example shows how that overlap can help. Rebecca Thomson found a body-positive trainer who ran a group for different ages, sizes and fitness levels. She could barely finish the warm-up during her first month. Before COVID-19 restrictions, she was attending four times a week.
Her experience does not prove that this model works for everyone. It shows why the trainer, setting and group can matter as much as the label. If both formats appeal, compare one class with one trainer consultation.