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Meet the Founder

My name is Kadeem Sebastian and I am  nationally certified personal trainer and Fitness Nutrition Specialist.  In the past, I struggled with my weight and health due to a lack of knowledge and motivation.  I was over 200 lbs. and was 33% body fat.  It was only when I had my yearly physical and my doctor told me that I was a borderline diabetic that I knew I needed to make a drastic change.


In 3 months I lost 40 lbs. and my body fat dropped to 7%.  The first 2 weeks were the hardest but all I could think about was what I would gain.  I wanted a clean bill of health, energy to go out with friends, and to feel comfortable in my own skin.


I am proud to say that my program has changed many lives.  From teenagers to grandparents, I have helped people lose weight, rehabilitate injuries, prepared athletes for their upcoming seasons and boosted self-esteems.


We all have excuses, but there is no excuse great enough to justify poor health.  Follow my lead and I will help you get the results you need.

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KS Fitness is a program that applies functional movement with HIIT (High Intensity Interval Training). This allows people of all fitness levels to be challenged at their own pace while having fun and getting the results you cannot get anywhere else. KS Fitness combines MMA style circuit training, weight lifting and natural body weight movement proven to burn up to 1000 calories in 45mins. With a great mix of boxing this is a fun way to maximize your cardiovascular and endurance to keep you healthy and fit. You must realize that your greatest opponent is yourself and the only thing stopping you is you. You vs. You is the motto that I live by and keeps my drive alive. Compete with yourself and you will understand the true meaning of KS Fitness.


2128 E. Orangethorpe Ave

Fullerton CA, 92831          (714) 472-3370











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