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An offbeat strength training experience that goes beyond the basics. LES MILLS STRENGTH DEVELOPMENT™ flows from powerful lifts to controlled, muscle-building moves, and wraps with fast, explosive power. This total-body workout is strength training, done differently.
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This is scientifically structured three-phase training. Each workout starts with big compound lifts for full-body power, there are targeted exercises to strengthen the muscles that support those lifts and core work for stability and strength.
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Becoming a Les Mills Instructor starts by securing your spot
at an upcoming training. Choose the LES MILLS™ program you want to train in and book in.
From global hits to bespoke tracks from independent artists. Each workout is powered by a playlist that drives the energy and sets the pace. This is the music that makes you want to move.
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Passion, energy, expertise… Certified Les Mills Instructors bring it all. Trained to world-class standards and with a library of workouts, they deliver powerful science-backed workouts and motivation to match.
There are in-person and online training options. Training for LES MILLS Signature programs is over two days, training for LES MILLS Innovation Collection programs is just half a day.

STRENGTH DEVELOPMENT can be enjoyed by anyone! There are options for all abilities and inspiring Instructors to coach you every step of the way.
Thousands of Instructors have been teaching STRENGTH DEVELOPMENT and they love it! Find out more about joining our Instructor community.
All over the globe STRENGTH DEVELOPMENT is filling classes and keeping members coming back for more. Find out how you can enjoy the benefits at your club.
FAQ's
To find a LES MILLS STRENGTH DEVELOPMENT class near you, click here.
Can’t find a class in your area? Try LES MILLS STRENGTH DEVELOPMENT free* at home with LES MILLS+.
Workouts Page
You need weights for LES MILLS STRENGTH DEVELOPMENT workouts – and the more you have the better. Using the SMARTBAR™ is ideal because with the gator technology and ergonomic hand weights it’s super easy to quickly add weight in small doses and gradually build weight for maximum gains.
Workouts Page
Both workouts are based on science-backed strength training theories. BODYPUMP focuses on high repetitions with lighter weights. The format and moves are set to work to the beat of the music.
Workouts Page
LES MILLS STRENGTH DEVELOPMENT is suitable for all fitness levels and abilities. Progress through the essential elements of strength training with controlled movements. Each workout provides the building blocks for the next workout in the set of 12 so you'll build strength as you go.
Workouts Page
Yes! LES MILLS STRENGTH DEVELOPMENT is an incredibly rewarding class that's simple and fast to train in. We have created an easy training experience and made it super fast to get qualified, so you could be teaching in no time! Find out more about becoming an instructor.
Workouts Page