Personal trainer Stonybrook

best weight loss personal trainer

Personal Training

Best personal trainer Stonybrook!!

All it takes to get in shape is a little FUN!

FUN personal training and group fitness offers individualized expert personal training at fair prices with no hidden fees, long commitments, or contracts. We are confident that our unique and friendly training style will keep you focused on your goals and looking forward to your next training session without the need for for a long term financial commitment. We are dedicated to keeping U at the center of your fitness and nutrition program. Plus your 1st session is always free. The only thing you have to lose is weight!

Click below to fill out your free assessment form and we will contact you shortly to schedule your 1st session

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No long term commitments or contracts!

Special discounts for seniors and veterans!

Expert 1 on 1 personal training & original class design!

Located just minutes from Stonybrook!

First session always free!

Click below to fill out your free assessment form!

FUN assessment form


Personal Trainer Stonybrook!

Our Services

1 on 1 Personal Training

1 on 1 programs tailored to fit your specific needs, designed by a Certified Personal Trainer with specialty certifications in Weight loss, Senior Fitness, Corrective Exercise, and Flexibility. This is a one of a kind motivational experience! Not only will you learn proper nutrition habits and exercise technique, you will learn proven strategies to create the proper mindset required to achieve your goals.

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Fat Burner Weight Loss Classes

Scientifically designed to burn calories, heighten your resting metabolism, and lower your rate of perceived exertion. This is the best way to burn calories fast! Our 40 minute fat burner classes consist of a brief warm up followed by a full body circuit using resistance bands and bodyweight. Suitable for almost everyone beginner to advanced. Classes are limited to 6 members to ensure safety and proper technique.

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Senior Fitness Classes

Scientifically designed to burn calories, improve balance, and mobility! Senior fitness classes are 40 minutes and consist of a brief warm up followed by a mild intensity exercise circuit, and a mobilizing cooldown. Specifically designed for seniors but suitable for all ages. Classes are limited to 6 members to ensure safety and proper technique.


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Meet our trainer


Ken is a NASM Certified Personal Trainer with advanced specialty certifications in weight loss, senior fitness, corrective exercise, and flexibility. After losing over 100 pounds he was inspired to pursue a career in the fitness industry. His unique training style, positive outlook, and genuine enthusiasm for seeing others succeed make for a one of a kind training experience that will have you looking forward to your next session!

See why people say we are the best Personal trainer Stonybrook!

  • Dedicated professional trainer who will help make the best of you happen.

    Veronica Horn Avatar Veronica Horn
    May 19, 2022
  • Great trainer! Highly motivating training experience targeted to meet my specific needs and goals! Truly makes getting in shape and staying healthy FUN!!!

    Laurie Varriale Avatar Laurie Varriale
    May 19, 2022
  • Hands down the best personal trainer on Long Island I have ever had. I’ve never been this motivated to increase my training intensity and lose weight by taking care of my diet. The training sessions are hard work, but they go by painlessly. His technique is different than others I have tried, and it really works. Extremely motivating and knowledgeable professional.

    Teddy Jira Avatar Teddy Jira
    June 2, 2020
  • Kenny is the all around guy for safe weight loss and training. He knows all the science and helps build the perfect program to help you. I have personally had the pleasure of being trained by Ken for over two months now and have lost nearly 18 pounds in that time. He is one of the most inspiring personal trainers I have ever met. I went into working out with Kenny with bad taste in my mouth from previous trainers that told me they had lost the weight and that their program wouldn't leave me unable to walk the next day. Well they did, but Kenny was the first trainer to actually show me that I don't need to be in pain to loose the weight. He always shows up on time and is always a quick text away when I have a question if a food is good for me or not. He makes working out fun by caring a conversation and inspiring you to do better. In these short months I have lost weight but grown as a person. Kenny is the best trainer I have ever met and I can't wait to train more with him.

    Dylan Avatar Dylan
    June 2, 2020
  • Energetic, fun training, new place thats convenient, new equipment and a great new place

    Michael Berretta Avatar Michael Berretta
    May 19, 2022
  • I needed motivation to reach my goal. I needed someone there to teach me why I should or shouldn’t do certain exercises and movements and most importantly I needed someone to make it seem like I wasn’t wasting my time. I got every one of those things with Fun Weightloss. They also helped me with a tennis elbow issue I had. I was working out muscles to help it that I would never in a million years think would help with the problem! Couldn’t be happier with my results!

    John Paul Aceto Avatar John Paul Aceto
    December 2, 2021
  • Ken is as good as they come. He is highly knowledgable in personal training and weight loss, and he has so much passion in what he does, you can’t help but feel motivated when you train with him. He’s the trainer you want if you actually want to see results.

    R S Avatar R S
    June 2, 2020

How do I schedule my free personal training assessment session?

Simply click below to fill out your assessment form and we will contact you by your chosen contact method to schedule your free assessment session. You can also call us, send an email, or stop by our Saint James location located just minutes from Stonybrook.

Click here to fill out your free assessment form

Contact us

460 Lake Ave, St James, NY 11780


(631) 779-6579

Looking for a personal trainer near Stonybrook? Stop by our state of the art facility located in Saint James right next to King Kullen and join the FUN!

We are open from 5am-7pm week days. 7am-7pm weekends

Existing clients can login here to access your schedule and purchase packages.

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