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We've added new, state of the art fitness equipment at our new facility. Stop by for a tour!


We've added boxing, MMA and physical therapy.


We offer a full array of classes including yoga, step blast, high intensity training and PiYo, a combination of pilates and yoga.


The Fitness Source offers several membership options to choose from, including gym only, classes, Functional Training and day passes. 

The fitness SourceBig Bear Lake’s Premier Fitness Center

Gym, Fitness Classes and Boxing/MMA!

The Fitness Source Big Bear has joined together with Fight Syndicate (boxing/MMA) to create Big Bear Lake’s only premier High Altitude Training Center.

We offer the best services in Big Bear from the top certified fitness professionals. Our services include membership packages, fitness classes, personal training and wellness programs to help you meet your needs no matter your fitness level.

We accommodate locals, guests and professional athletes looking to improve their athletic training.

At The Fitness Source we understand how important your health is to you and our priority is to help you reach your goals.

Located at 40679 Big Bear Blvd. in Big Bear Lake, CA (at the corner of Badger Lane and Big Bear Blvd., inside the old Funplex/Laser Tag Center)

Come in today to find out why we were voted the Best of Big Bear.




Free Weights and Machines

State of the art weight training equipment.

  • Technogym selectorized commercial equipment
  • Life Fitness plate loaded equipment
  • Free weights and benches
  • Jungle gym
  • Commercial Racks
The fitness Source
Yoga Classes at Fitness Source Big Bear

Fitness and Yoga Classes

We offer a full array of classes including yoga, step blast, high intensity training and PiYo, a combination of pilates and yoga.

  • High Intensity Interval Training: Tuesdays & Thursdays at 5:30 pm
  • Step Blast: Tuesdays & Fridays at 10 am
  • PiYo Fusion: Mondays, Wednesdays & Thursdays at 10 am
  • Yoga: Tuesdays & Thursdays at 8:30 am

Check out the Fitness Source Big Bear class schedule!

State of the Art Cardio Equipment

Treadmills, spin bikes stair steppers and rowing machines

Meet The Owner

Nina Mushin

Born and raised in Montana, Nina Mushin started her fitness journey at the age of 5. She was trained in ballet, then tap and jazz until the age of 17. She played many sports growing up to keep herself active with softball, basketball, volleyball, gymnastics, and track. She was also active with swimming and being a lifeguard at their hometown pool. It was Nina’s coaches in High School that started her with weight training. Since college, she has been active keeping fit at gyms and working out on a daily basis. She believes that keeping active is a priority to staying fit and building a strong immune system.

Nina became involved in the Sales Industry after college and maintained a Sales background in the Automotive Industry. As busy as she was, she continued visiting local gyms to stay fit. Nina and her husband, Don, who has since passed away, have owned a home in Big Bear since 2002 as seasonal residents, visiting Big Bear as time allowed. They became local residents as of September 2017 when Don had a chance to retire from the Automotive Industry as a General Manager.

Nina has found her niche in becoming the owner of The Fitness Source Big Bear. Don had always wanted to own a business in Big Bear and with Nina already working at the gym as an employee, they grabbed the opportunity to take over as owners.

As a local, Nina would love to see more residents becoming active and starting or continuing a fitness routine to help meet their fitness goals. The Fitness Source Big Bear welcomes all locals, Seasonal Residents and Tourists to visit the gym when time allows and offer different memberships to meet one’s needs.

Give us a call today and ask our about membership promotions!

The Fitness Source Big Bear

The Fitness Source originated in Las Vegas, Nevada in 2009 as a certified personal training and triathlon studio. Over the years, TFS has grown in the community by providing many clients a one on one approach with a goal oriented experience in understanding how to create an organic life style.

We continue that approach here in Big Bear under the ownership of Nina Mushin.