How to become a group fitness Instructor: A step-by-step guide

For many people, the journey to become an Instructor begins in the same place: a class they love, a favorite spot in the studio, and a weekly routine built around the workout. Over time, that connection sparks a bigger question: what would it feel like to be the one leading the room?
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For six decades, Les Mills has trained Instructors through a structured development pathway that has helped more than 130,000 people build the skills and confidence to teach. Here's what the journey looks like.

Why become a group fitness Instructor?

Group fitness Instruction sits at the intersection of fitness, performance, leadership, and community. One day you're taking a class. The next, you're helping someone discover their strength, rebuild confidence, or simply make it through a difficult week.

The role offers benefits far beyond physical fitness:

• Develop public speaking and leadership skills
• Build confidence and stage presence
• Join a global instructor community
• Deepen your understanding of exercise and coaching
• Create meaningful impact in people's lives

Many Instructors discover that teaching changes them as much as it changes the people in their classes.

“Becoming an Instructor was never the plan. I was introverted, shy, and terrified of being on stage. But it’s transformed me into a confident communicator – a skill that now shapes both my classes and my corporate role.”  Amreen Ismail, Abu Dhabi, UAE

Amreen now teaches multiple LES MILLS programs, she was nominated for Les Mills Superstar 2025 and won two GymNation awards: Instructor of the Club and Best Overall Instructor in the UAE. “While these milestones are incredible, the real reward is seeing my participants grow, step out of their shells, and believe in themselves.”

Step 1: Choose your program

Before you can teach, you need to decide what kind of Instructor you want to become.

Different programs cater to different strengths and interests. For example, you might be drawn to strength-based classes such as BODYPUMP™, high-energy formats like BODYCOMBAT™, cycling, dance-based workouts, yoga, Pilates, or HIIT training.

A simple rule applies: choose something you genuinely enjoy. Enthusiasm is hard to fake. The Instructors who create memorable experiences are usually the ones who love the workout themselves.

Step 2: Sign up for Instructor Training

Once you've chosen a program, secure a place in an Instructor Training course.

Les Mills offers both in-person and online training options, allowing participants to learn in a format that suits their schedule and location. The process begins by registering for an upcoming training event.

This is the point where a goal becomes a real commitment.

Step 3: Prepare before training starts

Preparation has a direct impact on your confidence during training.

Ahead of the training, participants receive learning materials that may include choreography notes, music, and release videos to study. Les Mills recommends spending time becoming familiar with the program before training and practicing assigned tracks until they can be performed confidently.

To set yourself up for success:

• Attend classes regularly
• Study the workout structure
• Learn key movements and terminology
• Practice presenting sections aloud
• Familiarize yourself with the music and choreography

The more prepared you are, the more you'll gain from the training experience.

Step 4: Complete Instructor Training

Your Initial Instructor Training is where theory meets practice. This training typically involves a combination of:

• Presentations and lectures from Master Trainers
• Group discussions
• Practical workout sessions
• Teaching practice
• Coaching feedback

Participants learn:

• Program structure and workout design
• Movement technique and safety principles
• Choreography learning strategies
• Coaching and communication skills
• Methods for creating engaging workout experiences – also known as creating fitness magic

Most importantly, you'll learn how to command a room without trying to become someone else. Great instructors aren't carbon copies. They develop a coaching style that reflects their personality.

Step 5: Gain your certification

After completing Initial Instructor Training, aspiring Instructors submit a teaching assessment video through the Les Mills Instructor platform. Assessors review performance and provide feedback to support continued development.

Certification demonstrates that you can:

• Deliver workouts safely
• Coach effectively
• Apply program standards
• Create a positive participant experience

Think of certification as the starting line, not the finish line.

Step 6: Start teaching and build confidence

Your first class is rarely your best class. Every experienced Instructor remembers missed cues, nerves, and moments where things didn't go exactly as planned. The fastest way to improve is through repetition.

Les Mills encourages new Instructors to spend time shadow-teaching and practicing alongside experienced Instructors before becoming fully established.  

This is when you can focus on mastering:

• Clear communication
• Timing and rhythm
• Member connection
• Technique coaching
• Energy management

Confidence grows one class at a time.

Step 7: Continue learning and developing

The most successful Instructors never stop learning.

Ongoing education is a major part of the Les Mills Instructor pathway. Advanced Training helps Instructors identify strengths, refine coaching skills, improve class experience, and develop longevity in teaching. Workshops and educational events provide additional opportunities to stay current with fitness science and industry trends.  

Continued development can help you:

• Grow class attendance
• Improve coaching quality
• Stay current with research
• Strengthen leadership skills
• Prevent career stagnation

Career growth opportunities

Many people begin teaching as a passion project and discover it opens up a wealth of new opportunities.

Becoming an Instructor builds confidence and communication skills that can help you perform better in your day job. It can also open up entirely new career possibilities. As experience grows, opportunities may include:

• Presenter: Presenters teach and showcase the latest program releases at workshops and events.
• Trainer: Trainers educate and mentor the next generation of Instructors.
• Assessor: Assessors help maintain coaching standards by reviewing instructor performance and providing feedback.

What starts with leading a single class can evolve into a broader role shaping the future of fitness.

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10 signs you’d make a great group fitness Instructor

Even if you identify with only one or two of these traits, teaching could be a great fit.

See the signs
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Ready to take the next step?

Find out about Instructor Training opportunities near you and take the first step toward leading your own classes.

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Final takeaway

If you've ever left a class feeling energized, empowered, and inspired, you've already experienced the influence a great Instructor can have.

Becoming a group fitness Instructor isn't reserved for elite athletes or lifelong performers. It's a learnable skill built through training, practice, feedback, and a willingness to step forward.

The first step is simple: choose a program, commit to training, and begin. Everything else grows from there.

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EXPLORE INSTRUCTOR TRAINING

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Frequently Asked Questions

How long does it take to become a group fitness Instructor?

Training timelines vary by program. Les Mills Initial Training is typically two days (existing Instructors may be able to train in a new program in one day), and is followed by a certification assessment process.

Do I need to be extremely fit?

You don’t need to be super fit. You need a level of fitness appropriate for the program you're training in. Familiarity with the workout and regular participation before training are strongly recommended.

Can I complete training online?

Yes. Les Mills offers both online and in-person Instructor Training options.

What skills make a great group fitness Instructor?

The best Instructors combine technical knowledge with communication skills, coaching ability, empathy, energy, and a commitment to continuous learning. Find out ten of the key attributes that great group fitness instructors have.

Is becoming an Instructor worth it?

For people who enjoy fitness, community, and helping others succeed, instructing can be one of the most rewarding ways to turn a personal passion into meaningful impact. Read Instructor Stories about how it has changed their lives.