We Break the Mold

No membership required, no registration fees, no cancellation fees.

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Challenging and Empowering

For ALL Levels of Fitness

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Maria Guerra

Founded by Celebrity Fitness Trainer and BURN™ Creator

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Nutritional Plans Available

Maria is certified as a Weight Management Specialist. Appointments are available to obtain a personal nutrition plan. A version of this is already included in the BURN™ program.

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Booking a Class

has never been easier!

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Hard Core Fitness Studio App

Booking Just Got A Lot Easier!

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At Hard Core Fitness Studio, we are committed to inspiring you towards fitness and

overall wellness with challenging programs in  an empowering environment.

We aspire to always provide:

  • A Welcoming, Non-Intimidating Environment
  • Challenging and Dynamic Classes
  • Fitness and Nutrition Education
  • A Clean and Well-Equipped Studio
  • A Professional and Considerate Staff
  • Affordable and Accessible Programs

Our Beautiful Location


Located in the beautiful Lake Forest Gateway,
23600 Rockfield Boulevard, Suite 2A,
off the Lake Forest exit,  where the 5 and 405 Interstates meet.



Hard Core Fitness Studio Breaks the Mold

 We offer exciting and effective group fitness classes throughout the day,
so there will always be something for you!


What Makes Us Different? Learn More...


click each image for a full description

Full List of Classes

Meet Our Trainers


Creator of BURN™ and Co-Founder of Hard Core Fitness Studio
Maria has been a successful group fitness instructor for over 10 years…


Zumba / BURN Trainer, First Aid and Pediatric/Adult CPR certified

Yesenia’s goal is to motivate and help others reach their fitness goals and not give up!…


Viviana’s love for teaching is reflected in her sessions and her diverse background makes her classes not only interesting but harmonious and exceptionally enjoyable…

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