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

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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...


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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 / Kids Classes 

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…


Elsa has always had a passion for fitness and overall physical wellness. She started attending indoor cycling classes back in 2004 in her hometown in Mexico. Later, while attending college at Cal State Long Beach…


Circuit Training
Justin is a fitness coach, competitive dragon boat racer and endurance athlete with a deep passion for competition and for coaching others in one-on-one and group environments.  Since 2008, he has been blending his passion for fitness and competition with…

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