our trainers

ben unger

Born and raised in Brooklyn, NY, Ben found his passion for fitness when he realized the impact it had on him as a person in all aspects of life, especially his mental health.


“I had a really difficult early twenties, to the point where I required medication just to function mentally. The fitness lifestyle completely changed my life. I have been medicine free for 5 years now, and have never felt happier or more in control of my life. I’m committed to now give that same feeling to others.”

Kalib Nieves

Born into a military family in Honolulu, Hawaii, Kalib moved around a great deal as a child until finally settling down in Wisconsin. Around three years ago Kalib decided to move to New York City in search of something bigger and better. That search led him to helping others get into amazing shape.


“What got me into training was the sheer amount of inspiration I got from seeing someone else’s life improve so drastically once they started reaching their goals. I would be wasting my purpose in life if I wasn’t giving back to others the way I was once given the support needed to get to where I am today."

janet Caulderon

Born and raised in New York City,  Janet found here passion for fitness after realizing how much mental health reaps the benefits of exercise.

“I had a long term battle with depression.  Fitness saved my life.  If I can overcome my mental hurdles through my fitness journey, then maybe I can help others overcome their battles, whichever they may be.  Its my version of the circle of life, my way of paying it forward.”

Kenny Wang


Born and raised on Long Island, Kenny is better described as a west coast transplant after growing up in Northern California and Malaysia. He started lifting weights to complement his dance and physical theatre training.


"I started to see the good changes: bigger arms, leaner abs, but something else was happening. I was standing taller, talking to myself more kindly, and taking better care of my body. I was drawn to a career in fitness because it's more than a day job for me. I see real change happening in people's lives, and I'm grateful to be a part of that journey for them."

Ethan Fuld

Born and raised in Englewood, NJ, Ethan originally got into fitness when he kept getting winded walking up stairs, and was unhappy when he looked in the mirror.


“I grew to love fitness because continually setting goals and knocking them off your list is addicting. Whether it’s eating right or lifting heavier, there’s no better feeling.”


Ethan is the first ever BUF client to turn into a trainer. His transformation was incredible.


Ethan works as a software engineer by day and trains during his free time.

Jan Erik Navoa

Raised in Queens, NY, Jan Erik found his passion for fitness at a very young age and hasn't looked back since. 

"Fitness is just as much about the process as it is about the end result. It's about personal growth, perseverance, and reaching our potential. Helping people reach their fitness goals is just a metaphor for their real growth, their inner growth. Oh, and I love helping people look snatched!"

Alexander “Li” Vizzi

Born and raised in Baltimore, Li first got into modern dance before finding Pilates and weight training.

Attracted more to the athletics of dance, he moved his way into Pilates where he fell in love with conscious movement and the mind-body connection.

Li loves to bring the detailed Pilates approach to weight training and the full-bodied challenge of functional movements to Pilates class.


“I have a pretty obsessively analytical mind and I love to sweat the small details of big movements. I think Pilates feeds perfectly into learning how to engage the core in barbell and bodyweight movements. For me the fun is in finding the surprising overlaps between different approaches to movement and using mat class as a laboratory to break down the small but crucial details of power and gymnastic movements.”

Meg Hagar (dietician)


Meg received her Master's Degree in Nutrition from Hunter College in NYC. She then completed a 1,200-hour residency program at multiple hospitals and sub-acute care centers in NYC such as Bronx Lebanon Hospital and Bronx Lebanon Special Care Center. She is a Holistic Registered Dietitian (RD), Holistic Nutritionist and a Certified LEAP Therapist.


“By viewing the client as a whole being and one synergistic system, I'm able to better understand the potential root causes of issues and truly help others heal from the inside out.”

© 2021 BUF Personal Training, LLC