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next level LIVING

Building Strength That Elevates Performance

Hotel Gym

Virtual Training

We offer one-on-one virtual strength training with personalized programs designed to fit your lifestyle. Train from home, your gym, or while traveling with expert coaching focused on strength, performance, and results.

Personal Training

Private training sessions at your home gym, work gym, or a private fitness center chosen by you. We make it easy for you to reach your goals by providing convenience and flexibility.

Custom Fitness Plans

A unique, customized training plan available on your phone. Your plan is complete with digital demonstrations of each exercise and can be synced with your fitness wearables to track workouts and sleep.

Jeannie Witmer Chapin

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I’ve trained with Duncan throughout my second pregnancy. It has felt great getting a solid workout in each week throughout my pregnancy, allowing me to continue to feel strong and fit. He has thoughtfully curated the workouts to continue to push me but also to focus on mobility exercises that alleviate the aches and pains of pregnancy and will prepare me for a smoother childbirth and recovery. He is always open to adjusting our sessions and specific exercises to meet me where I am. He has a kind and thoughtful way of engaging with his clients and is a joy to be around.

Danielle Erlich

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Duncan is extremely professional and a pleasure to work with. He cares to understand your goals and makes sure your needs are being taken into consideration. He is motivational and takes the time to walk you through the excersize which is exactly what I said I was looking for. I am very happy I finally found a trainer that I enjoy working with and am already feeling stronger.

Smitha Santanam

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Duncan and I have been training together for the last 9 months, and it’s truly the best thing I’ve ever done. Duncan is a tough but fair and patient coach, and he has shown me that I’m far stronger and more capable than I ever thought I was. He has also made working out enjoyable for me again, and I look forward to our sessions every week. On top of being an incredible coach, he’s also extremely punctual, organized, and always manages to squeeze me in when I have to change our usual schedule. I’m grateful to Duncan for helping me build a strong foundation, and I’d absolutely recommend him to anyone looking to grow/build upon their fitness skills!

Leah Freedland

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I worked with Duncan for the second and third trimester of my first pregnancy and had an A+ experience. Duncan is incredibly talented - he comes up with creative, challenging, and fun workouts that make you feel better physically and mentally. And, he is a really positive person who is easy to be around week after week. He is also an incredibly timely and organized person which helps make fitting sessions into busy schedules much easier. I genuinely enjoyed working out with Duncan weekly during my second and third trimester (and soon post-partum!) and give him a strong positive review.

Tara Kaminsky

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The best trainer!! I highly recommend Keen Personal Training! He’s incredibly knowledgeable about all different exercises (including my favorite pilates) and has given me great alternatives when I’ve had an injury. His workouts are unique and always challenging, and I've definitely gotten so much stronger since working with him. He’s great at tailoring sessions to my needs and always knows exactly how to keep me progressing.

Greg Silverman

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Coach Duncan has been the one consistent thing in my life for the better part of the last year and a half. over this period of time i’ve gotten to know myself deeper than ever. beyond an emphasis on form and technique, Coach Duncan has guided me through my journey in investing in my physical health - on another level. the philosophies that I gleaned from Coach Duncan (which he implements himself) will stay with me forever. Coach truly downloads and installs what’s necessary in your regimen and (with a magnifying glass) ensures that it is implemented properly. i’m very glad I found Coach Duncan; the work we’ve done together has rendered a greater version of myself!

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About Me

Duncan

Owner/Lead Trainer, BSc in Health Science: Health Promotion, ACSM-CPT, CSCS, Pre-Post Natal Certified

Fitness is the foundation of my life and my work as a New York personal trainer. I believe that showing up for others starts with showing up for yourself through consistent strength training, functional fitness, and healthy habits.

I lead by example as a practitioner of training, not just a coach. Prioritizing health, fitness, and physical strength creates alignment, confidence, and long-term results in every area of life.

My clients trust me as a dedicated resource in their journey. As an experienced NYC strength and conditioning coach, I am fully invested in every step — and I will be fully invested in yours.

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Mission

Keen Personal Training empowers clients to prioritize fitness and longevity, recognizing that proactive health choices lead to a happier, more fulfilling life. Founded on Duncan’s belief that fitness has zero disadvantages, it helps busy professionals integrate health into their lives without compromising career success or personal responsibilities. Through expert coaching, education, and lasting support, Keen equips clients with the tools to achieve both success and long-term well-being.

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Chelsea

137 5th Ave
10th Floor
New York, NY 10010

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SOHO

598 Broadway
5th Floor
New York, NY 10012

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Midtown East

230 East 53rd Street
2nd Floor
New York, 10022

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Upper East Side

142 East 80th Street

New York, NY 10075

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Flatiron

1 East 28th Street
2nd Floor
New York, NY 10016

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Union Square

25 West 14th Street

New York, NY 10011

NEW west chelsea

West Chelsea

127 West 26th Street
New York, NY 10001

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4.

We develop clarity around your fitness goals

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We design a strength and fitness program unique to your lifestyle and goals

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We do a thorough strength and movement analysis

OUR PROCESS

1.

Schedule a phone call to talk about your goals and lock in a time and place to meet

2.

We meet you for a complimentary session at a location convenient to you

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WELCOME

We've been expecting you.

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