"KAIZEN"

Change for the Better

Trainers and Staff

CHRISTOPHER DAVID

As a first-generation business owner, health enthusiast, and philanthropist, I've honed my expertise as a personal trainer since 2016. With a deep understanding of both the human mind and body, I've fostered client relationships to propel them towards their fitness aspirations. Guiding individuals towards mental and physical strength has been my most rewarding journey. This drive led me to establish Kaizen Fitness Health and Wellness, driven by a passion for top-tier fitness services. Our mission extends beyond quick fixes, instead empowering clients to embrace lasting lifestyle transformations. Rooted in our core values and embodied in our branding, Kaizen embodies the Japanese principle of "continuous improvement." We're firm believers that wellness isn't fleeting but an enduring commitment. Our goal is to inspire clients with diverse fitness experiences, both within and beyond the gym, fostering a lifestyle of perpetual progress. Committed to enhancing the lives of those around me, I strive to make a lasting impact. Let's embark on this transformative journey together.

CEO & Personal Trainer

JENNIFER REYES

Hey there, I'm Jennifer, but you can call me Jen. Born and bred in the heart of Hackensack, I've always embraced an active lifestyle. My journey into fitness began when I hired my first personal trainer in 2014, experiencing incredible results through strength training. Witnessing my own transformation ignited a passion for guiding others on their wellness journeys.

My path led me to pursue social work and eventually, I found my way to the prestigious Focus Personal Training Institute in NYC in 2017. Since graduating, I've never stopped learning. I attend seminars, take classes, and seek out mentors to enhance my expertise, ensuring I can impact as many lives as possible.

My mission is to bridge the gap between a sedentary lifestyle and discovering the joy of movement. Whether it's boxing, strength training, or mastering kettlebells, I'm here to guide you. Health is an ever-evolving journey, and I'm committed to sharing my knowledge to help you along the way. Let's make strides towards a healthier, happier you!

Personal Trainer

Education

  • Focus Personal Training Institute Certification (2017)

  • Interval Training for Clients and Athletes (Mike Boyle, ATC)

  • Scoliosis and Schroth (Ariel Flug, PT, DPT, BSSPT)

  • Olympic Lifting & Client Application (Liz Cavanaugh, Angelica Virga)

  • Motor Control and Power Lifting (Ryan Chow)

  • Diaphragmania (Alanna Bradley)

  • Movement Preparation for Squatting (Zeena Hernandez, PT, DPT)

  • Low Impact Training for Sedentary Populations (Will Brown)

  • Athletic Adults Level 1, Reload NY (2020)

  • Athletic Adults Level 2 Reload NY (2021)

  • Bell Mechanics Certification (Sam Sciaccia) (2022)

  • Moment Education Mentorship (Dr. Andy Chen) (2023)

DONNY DRUMMOND

Meet Donny, your master-level movement specialist with 9 years of training and 55 years of life experience. Having conducted over 10,000 training sessions and lived through 20,000 days, Donny's expertise runs deep. His approach is holistic and comprehensive, incorporating various techniques, paces, loads, and intensities to enhance your training. Focused on cultivating a more robust, resilient human form, he prioritizes mobility and strength at every range. Donny readies you for the unpredictability of modern life.

Expect to elevate your movement, breathing, nutrition, sleep, and recovery. Through Donny's guidance, you'll cultivate a stronger core, flexible hips, and a balanced mindset, all aimed at attaining greater vitality and longevity. Your journey to optimal well-being starts here

Personal Trainer

Education

  • FMT Blades and Blades Advanced IASTM Certified

  • FMT Basic and Advanced Kinesiology Taping Certified 

  • FMT RockPod Cupping and RockFloss Compression Band Certified 

  • Animal Flow Level 1

  • Perry Nickelston Lymphatic Mojo

  • ZHealth Breathing Gym

  • Vivohealth Barefoot Movement Coach 

  • NASM Certified Master Trainer

  • NASM Corrective Exercise Specialist 

  • Stanford University Exercise Physiology

  • Level 1 Stick Mobility Certified Instructor

  • Level 2 Stick Mobility Certified Instructor

  • RockTape FMT Movement Specialist and
    Advanced Movement Screening Certified 

Lauren Keeler

Nutrition Coach | Personal Trainer

Hi, I’m Lauren! I’ve spent over 10 years as a ballet teacher, and movement has always been a big part of my life. But it wasn’t until I started my own health and fitness journey that I truly discovered how powerful it is to feel strong—physically, mentally, and emotionally. That transformation led me to personal training in 2020, and I haven’t looked back since.

In 2023, I stepped onto my first bodybuilding stage as an amateur bikini athlete and instantly fell in love with the process. I’m now working toward earning my IFBB Pro card and continue to challenge myself through every step of the journey.

While I love training, my true passion lies in nutrition. I’m certified in both weight management and fitness nutrition and currently working toward my health coaching certification. I want to help people move away from the yo-yo dieting mindset and stop guessing what their body needs. My goal is to guide clients through sustainable, individualized plans that lead to real, lasting results—both in how they look and how they feel.

I believe in eating toward your goals and using proper nutrition to fuel performance, improve body composition, and extend your healthspan. Most importantly, I’m here to help you feel confident in your skin, build a healthy relationship with food, and stay accountable every step of the way.

Let’s transform your mindset, your body, and your life—together.