Invest In Your Health

Personal Trainer

Training by Ky Vuong


Training With Ky Vuong

“My passion and what brings personal fulfillment is to see every single one of my clients succeed at accomplishing their fitness goals.”

I have experience working with clients of all ages, from 8 to 80. I adjust my training style to fit you. No two training sessions are alike; every workout is tailored to your level of physical fitness, goals, as well as pre-existing medical conditions and concerns. Give me your goals and I will give you the steps to get there with a fun strategy designed specifically for you.
I can help you create the body you have always wanted, it’s that simple. My training philosophy has always been that the enjoyable journey leads to the best achievements. I put the FUN in functional fitness and encourage clients to embrace exercise as a lifestyle. Workouts should be less “work” and more joy.

Let’s GO!

Get IN The Best Shape of your life!

Real Work. Real Results.

Certified Trainer

Graduated Springfield College with a Bachelor of Science in Exercise Physiology and Minor in Business Management. Top honors and Magna Cum Laude title.

American College of Sports Medicine

American Council on Exercise

National Federation of Professional Trainers

National Council on Strength & Fitness



Functional fitness

Functional Fitness exercises are my specialty. I will show you how Functional Fitness is multi dimensional and will give you a better, quicker workout, guaranteed! 

Ky's Bootcamp

Bootcamp transforms lives and communities through challenging 45 min cardio and strength workouts that will leave you feeling stronger and more confident.


Offers & Details


Personal Training 1 on 1. Customized For You!


Group Sessions Available at Discounted Rate.


Online Training Using Zoom or Similar Apps.


Online Group Session Training Using App.

personal fitness coach Hawaii

Client Testimonials – From Google:

Key Fitness Hawaii
Based on 137 reviews
review us on
I am a 48 yr old female, and not the type of person that is self motivated to workout on my own. Ky made me feel very comfortable from the 1st meeting, and he is truly driven to formulate a plan based on your goals. Ky's workouts are physically and mentally challenging, and no two workouts are the same. Sometimes, I feel like I'm not going to be able to finish some of the exercises, but he is the best cheerleader and pushes you safely through to the end. It feels like I conquered a mountain after every workout, and it makes my soul feel great!
I took Ky’s Circuit Boot Camp and he is amazing!He’s program is built to push myself to the limit. He have a really good understanding of functional fitness and he explains how to do his workout and how it’s beneficial very well.However what I really like a out Key Fitness is the energy of the community. Everybody encourage each other make you feel like you belong no matter where you are in your fitness journey.He even offers a hiking trip and he’ll make any mundane hiking in to a pure adventure!
I’m a month into training with Ky and it’s been a fun yet challenging experience so far. He is innovative with the workouts and brings great energy to every session.
Ky is an exceptional fitness instructor who specializes in functional training. His classes are dynamic, engaging, and meticulously designed to improve overall strength, mobility, and endurance. Ky's teaching style is both motivating and supportive, creating an inclusive environment where participants feel empowered to push their limits and achieve their fitness goals. His attention to proper form and technique ensures a safe and effective workout for all skill levels. Whether you're a beginner like me or a seasoned athlete, Ky's training offer a challenging yet rewarding experience that leaves you feeling energized and inspired. I highly recommend Ky as a fitness instructor for anyone looking to elevate their fitness journey with functional training. Definitely be worth your time and money! Hands down…the best fitness trainer on the island! 5 stars for Key Fitness Hawaii! Don’t wait! I encourage you to start getting fit and healthy today with Ky! 💪🏼
As someone who's experienced various personal trainers over the years, I can confidently say that working with Ky has been a transformative experience. From the moment I began my fitness journey with them, I knew I was in capable hands. Ky, possesses a rare blend of expertise, professionalism, and genuine care for his clients' well-being. He took the time to understand my goals, limitations, and preferences, crafting personalized workout plans that were challenging yet attainable. Whether it was strength training, cardio, or flexibility exercises, every session was thoughtfully curated to maximize results while minimizing the risk of injury. What truly sets Ky apart is his unwavering dedication to my progress. He didn't just guide me through workouts; he motivated and inspired me to push past my limits, celebrating every milestone along the way. His encouragement and positive reinforcement were instrumental in keeping me focused and motivated, especially during challenging times. Moreover, Ky, goes above and beyond by providing invaluable advice on nutrition, lifestyle changes, and overall wellness. He understand that fitness is not just about what happens in the gym but also about making sustainable lifestyle changes outside of it. His holistic approach to health and fitness has had a profound impact on my overall well-being, both physically and mentally. In addition to their expertise, Ky, creates a supportive and inclusive environment that makes every session enjoyable. His friendly demeanor and genuine interest in his clients' success foster a sense of camaraderie that makes the journey to fitness feel less daunting and more rewarding. Overall, I cannot recommend Ky highly enough. Whether you're a beginner or a seasoned gym-goer, working with him will undoubtedly elevate your fitness journey to new heights. With Ky by your side, achieving your health and fitness goals becomes not just a possibility, but a reality. Thank you Ky! 💪🏽
Ky is amazing! He has a gift of motivation and working with all ages and fitness levels!
I love training with Ky! He's so educated, entertaining, encouraging and positive. He has tons of different tools and techniques and I feel so strong, agile and flexible after our sessions. You are a gem in Kaneohe!
Ky Fitness: Functional Training That Gets ResultsIf you've been struggling with persistent aches and pains despite regular workouts, it might be time to rethink your approach to fitness. That's the realization I came to after experiencing lingering core pain, which made me understand that I had been training incorrectly all along.That's where Ky Fitness comes in. Ky is a true expert in functional training, helping clients like myself identify and target the small, often overlooked muscles that play a crucial role in our daily activities and overall well-being.What sets Ky apart is his comprehensive knowledge of human biomechanics and his ability to design effective, personalized training programs. He doesn't just have you mindlessly counting reps and lifting weights; instead, every exercise is purposeful and tailored to your specific needs and goals.But it's not all work and no play with Ky. He infuses a sense of fun into the training process, making each session engaging and enjoyable. Gone are the days of dreading monotonous workouts – with Ky, you'll look forward to pushing yourself in a dynamic, supportive environment.If you're serious about achieving lasting results and improving your overall functional fitness, I cannot recommend Ky highly enough. Don't hesitate to reach out if you'd like to join me on this transformative journey with Ky. Your body – and your daily life – will thank you.
Ky is a great trainer who incorporates a variety of functional fitness exercises that work the entire body. With his encouraging attitude, he pushes his trainees to do their best even when they feel like they’ve hit a wall, and it’s a lot of cardio. I noticed dramatic differences in my body after starting to workout with Ky! I hope to have many more sessions with him.
Love Ky his fitness classes. Definitely pushed me to do more and got my heart rate up. Got my wire and kids also involved so love that we can do fitness as a family. Recommend to anyone at any fitness level. 💯🔥
KY of Key Fitness Hawaii is amazing trainer and teacher. He truly care about everyone’s success. I highly recommend his training to be incorporated into your lifestyle. He works with our company Finfit Lifw to help us promote the Finfit life movement that we stand for. Thank you KY for being on this journey with us
Ky is an amazing teacher. He brings high energy and experience. After training with him a few times, my energy level is much higher, and my endurance is better. I can't wait to see my progress a year from now. Thank you Ky Vuong.
I think key fitness Hawaii is a very fun way to kick off your functional fitness. It enables you to get your physical exercise with workouts that is not only building muscle for functionality, but also longterm health. When I did it, I had a fun time with a good quality workout.
Every Friday we have “Functional Fitness Fridays” with Key Fitness Hawaii at our FinFit Life Office. The exercises challenge your physical fitness and coordination and at times your mental as well. These exercises will definitely get your heart pumping and your core burning! Ky Vuong of Key Fitness Hawaii brings a wealth of knowledge and experience which he uses to tylor the workouts to the individual’s fitness level so everyone is able to benefit from these exercises. If you want to get fit and build functional strength then in my opinion, Key Fitness Hawaii is the way to go!
Key Fitness Hawaii is truly a gem! The trainer Ky Vuong is not only knowledgeable and experienced but also incredibly supportive and motivating. The atmosphere is always welcoming, and the variety of classes keeps workouts exciting and effective. Whether you're a fitness enthusiast or just starting your fitness journey, Key Fitness Hawaii is the place to be!"Ky Vuong is an exceptional trainer whose guidance not only helped me achieve a better physical condition but also aided in my injury recovery, ultimately resulting in increased strength. This newfound strength has proven invaluable in enhancing my performance at work.
KY is an amazing trainer. It's not your typical or average training, but it's 100 functional and working for our son. He will keep you on point, focused, and energetic during your training sessions. He also guides you with a nutritional plan to help you in between training days that will help you reach your end goal. Remember He will train and help you reach your goal, but you need to also do your part on your off days to stay focused and eat right. Overall, we highly recommend this gym and his training techniques. He is amazing with our son and very reliable.
5 stars. Only reason being it works. After a for year weight lifting program in my local gym, doing what I already knew: i.e. form vs exertion rate vs burnout. I definitely got stronger during that time, but then I moved to Hawaii from Vegas and need something to keep my fitness up. My uncle and cousin had already been in keys program for about a year. They suggested to joining with them for the first time, I agreed. Little did I know, what would I was getting my self into. My 4 years of weight training flaws were exposed during the first “warmup” of 15 mins!First of this is high intensity interval training. Pretty much an exercise that pays more attention to the functional strength of your natural body movement. #functionalisfit then times the exercise to 6-7 different stations, 1min each full out paced sprints. Full power and drive to push you past your bodies limits. Key is well versed in his area of fitness expertise, where I truly believe he would make us do any exercise he couldn’t do.Second, drive pass your limits.In my 4 weeks with key, I definitely enjoyed the intensity and challenge of the workout. Each week for 1 day a week, left me hungry for the next workout. Key comes up with custom workout routines/courses on his own, put to the test by none other than himself. So, in each workout you join, he can understand the stress and pain and exhaustion you may feel during your 1hour session with him. Many of the exercises were quite new to me in turns of complete isolation form. Which in turn I have incorporated into returning to the local gym.Third. It works.As I said, once a week intense workout like this will have you either hating it and quitting or loving it and persevering. I will attest to feeling pain and exhaustion I’ve never felt before, but the human body is amazing at teaching you what you can or cannot do. I added simple activities such as beach calisthenics and sprints. Every week I returned to train with key, I felt stronger and motivated to do not only better but work smarter. Pace is key to keybatta.I highly recommend giving his workout a try. Being functionally fit is the future of overall fitness. you’ll never know your own capabilities until you try.
Ky is an amazing trainer! He trains my 15 year old son. His workout styles are tailored to each individual and he will help you reach your goals. He is very positive and motivating and knows how to push you! If your looking for a personal trainer Ky is the man for you!!
I’ve know Ky for over 20 years back in our bodybuilding days! Ky has alway been preaching FUNCTIONAL FITNESS way before all those boot camp and cross fit style training. Believe me it works for all types of training from bodybuilding, sports athletes, to everyday health and wellness. I’m grateful Ky can pass his knowledge on to my son & daughter as they train for their high school baseball and softball season! KYBATA! “Functional Fitness” (You Got To Come Check It Out)
The workouts are different from ones I've done before but are really effective. I like the environment and the constant motivation Coach Ky gives. I totally recommend this too all athletes and teens. I'm excited for the new challenges and workouts that are to come.
Been there only a few times, but this is some of the best training I’ve ever done.
I’m 55 years old and came to Ky with lower back issues. In just 6 sessions under his training and guidance, my back hasn’t felt this strong in years! And the back issues are a thing of the past! Best thing is getting to work with these Kybata Warriors every week! I’d recommend Coach Ky to anyone looking to reach their fitness goals!
I had the pleasure of training with Ky during my month in Oahu – and boy did he kick my butt! 💪 As a pilates girl from Canada, I didn’t know what to expect when my cousin brought me to my first session! The workouts were so intense, and so rewarding, I always left the sessions wanting to come back for more!Ky is so encouraging and brings such a fun and positive energy to every class! He pushed me to my limits and it really helped me realize I am much stronger and more resilient than I ever thought I was! I felt so proud of myself whenever I completed a set. I saw so much improvement in my mental energy and physique just from doing a few classes in such a short period of time.If you’re in Oahu looking to try out new workout classes and want an amazing coach, Ky is your guy. His workouts are functional AND fun, I 1000% recommend him to anyone, all ages, all sizes. You’ll come out feeling good as a new person – and with loads of new friends!(Ky, please start an online class so I can workout with you guys! 😅)Much love from Toronto! 🤍🌺🤙🏽
Key works around my military disabilities to help regain my strength and mobility. My girlfriend and I attend as a couple and key is able to modify workouts that challenge both of us. If you are looking to grow your endurance and full body strength I highly recommend introducing some key fitness time into your routine.
I am enjoying the boot camp a lot!!!! The coach is fun and super friendly. He ia so good at helping us achieve our fitness goal. I love participating in this boot camp.
Feeling stronger. Surprisingly my bum knee and lower back are not bothering me as much as I thought it would. Love the variety of things he has us doing and love the fact that I have Yosh to work out with. Wish he had a bigger place.
Key Fitness is a great one on one, focused workout with a personal trainer. Years of experience and creative ways to work you out. You will achieve results if you put in the effort. Very personable and fun to work with!
I usually do not post service reviews, but the Key for Fitness is an exception for Ky's exceptional training. This trainer embodies professionalism, enthusiasm, and care that will push you beyond your physical and mental limits for performance, athleticism, and overall functional fitness. His training and coaching style is UNMATCHED compared to other trainers on the island (that I experienced and heard), and he genuinely cares for every client that arrives at his training. In short, this place is a must-try for all ages, and you will feel like a completely different person after every session and accomplishment from the Key Fitness Hawaii! Thank you as always, Ky!
I had the privilege of training with Ky for a month while visiting my daughter in Hawaii. His workouts were intense a varied. I highly recommend training with Ky!
I have been training with Ky for 3 1/2 months. I have lost 9 lbs and 2 inches of my waist. My friends and family have notices the change in my physique. I train 2x per week. On Wednesday we do a combination of CrossFit and drop sets. This allows me to individually work on my weaknesses. The Saturday sessions feature Kybata. This is Ky’s version of HIIT. The bootcamp at 8 am has a group of 10 people. 10 Stations 4x each. A combination of exercises that work different body parts. 30 seconds in and 20 second recovery. Then a challenge Kybata where teams compete for the Saturday championship.The small group participates at 2:30 pm. This group goes 2 hours. With challenges then Kybata then ultimate challenges to test your recovery and resolve when physically exhausted. Ky tailors workouts from teens to octogenarians. He preaches functional fitness. Living your best life in a body that functions at its peak. Discipline and Consistency and maximizing your potential. I highly recommend Ky’s methods to Functionally Fitness.
I joined Ky boot camp in April. I am writing this review July time goes by quickly. I have enjoyed Ky’s Saturday boot camp. It has helped build more stamina and endurance. I find Ky’s boot camp financial affordable. You can workout at your own pace. Ky is very very welcoming and shows guidance with your exercisesTom M
I'm so glad I found him. He pushes me to do what I know I can do but would stop on my own. I used to just lift weights which I still love but during this functional training is a whole different level of strong and fit. I already am so much stronger and fitter. Can't wait to see what's to come.
I had the best time training with Ky in his group fitness class this past Saturday! I recently moved to Oahu with my husband who is active duty military, and being quite a ways away from friends and family, I have been looking for ways to meet people in my community. Ky reached out to me on the Nextdoor app and invited me to his group training session. I am so grateful to Ky because I was able to meet really great people who are local to me while getting in a great workout!The movements were challenging but the positive environment and all your peers cheering you on made the workout so fun and made you feel so accomplished and good afterward!If you are looking to get into fitness or even if you're like me and fitness has been part of your life for a long time, I can't recommend Ky enough!I am so looking forward to the next group session and can't wait to experience one of his Fitness Adventures!Support your local businesses like Ky and Key Fitness Hawaii!
Right away Ky's personable nature made me feel at ease and motivated. His boundless energy is contagious, which pushes you to give your all in each session. As others have said, what sets Ky's workouts apart is their functional aspect, allowing you to develop strength, agility, and endurance that directly translates to real-life activities.
As a student athlete my goal is to get stronger and increase my vertical. I’ve been seeing Ky for about 3 months and my vertical has gone up since. I enjoy working out with him because he makes it fun and challenging for me.
My daughter and I both workout with Ky. We both have never worked out before. It’a been only 3 months and my daughter is stronger and fit for volleyball. Ky makes working out fun for both of us.
Awesome experience with Ky!!Each session gets my heart pumping and builds my endurance. 💪🏻💪🏻💪🏻
Ky is an amazing trainer! I love his workout style as I saw great improvement of my body strength in a short period of time. He helps me get to my goals and knows exactly how to get me there. He is very positive and very encouraging which helps me go beyond my comfort zone. Definitely recommend him to my friends and loved ones. Either you’re a newbie or been training for a while, check him out, attend his Saturday session and you’ll be so inspired to make some changes for yourself. Thank you, Ky! You’re an awesome coach! 💪🏽🎉💪🏽🎉
I started having back issues a few years ago.Which led to some unwanted weight gain and limited my ability to exercise In my first month with Ky I have lost 10 pounds so far and am noticing more stamina and strength.I really like how Ky pushes and motivates Me during my workouts and how each workout is different I would highly recommend Ky for anyone looking for a great personal fitness trainer thanks Ky
If you want a Hawaiian journey you’ll cherish forever, go with Ky! His enthusiasm is contagious, our whole group was fired up! Scenic beauty and adventure, great memories to last a lifetime. Thank you!
my has been beyond excellent for out twin girls! We wanted focused supportive workouts for our girls and that’s exactly what he has done for them . He is so encouraging and motivating for them ! They love their sessions with him , he makes it fun . Thank you Ky!
Ky’s Saturday morning boot camp is awesome! He’s super motivating and really challenges you to be the best you can be. He encourages rest and hydration, which is so important, while still giving positive feedback that it is important to know your own body and its limits. You will definitely get a full body burn throughout the whole boot camp! And trust me, you’ll be sore everywhere probably the next few days. 😂 But no matter what it may be, you’re training for a race or just trying to stay active for your health, Ky is a great trainer who is willing to help you reach your goals. He’s so friendly, easy to talk to, and will push you to your limit. Thank you, Ky, for a wonderful experience! I will definitely be returning for boot camp in the future! 🤩
i would absolutely recommend key fitness!, ky is very knowledgeable and tailors the training to your specific needs and pushes you just the right amount, making a great training session! he’s really good with people like me that need that extra motivation😊
I have been working with Ky for about 5 months and I’m not stopping anytime soon. His functional fitness program is incomparable. He goes above and beyond for his clients, making me feel confident and motivated to do my very best in every session. Not only do I do private sessions but he also accommodates for my group sessions with my coworkers. Ky provides a fun, high energy, and hardworking environment that caters to every individual. Not only do I look toned but my confidence in working out and feeling confident in my own body has drastically changed thanks to Ky. You won’t be disappointed if you train with Ky!
Ky’s motivation of functional fitness is top tear . Being able to workout with his high energy and presence, motivate’s me to keep going and never to give up. Also, being able to work next to his gym i can never make an excuse on not to come because he will find me. Amazing work you do and thanks for putting up with me 😊
Training with Ky is the best! I attended his Saturday morning boot camp sessions and this was my first time working out in the group setting with an instructor, but I loved it so much. Ky is very encouraging, knows how to push his clients, and puts together really challenging yet fun workouts. Highly recommended if you are looking to improve your functional fitness and overall athleticism!
Very cool and inspiring
Thank you Ky @fit4u3000 on Instagram! Incredible workout. I love the feeling of being so spent I can’t lift my arms! The workout vibes are so supportive with all the other great people there cheering you on. You MUST absolutely try this workout. Ky is friendly, professional and engaging. You won’t regret it! And, you’ll feel like a super hero after!Another sweaty, satisfied client,Elizabeth
Key Fitness Hawaii is definitely the place to go!! I met Ky about a month ago, and from day one I knew he’d be an excellent trainer. He has such positive energy and brings on the challenge and beast within you. Ky’s workout techniques are awesome. I highly recommend you take the leap and join Ky, it is worth it.
Ky is a beast of a trainer and if you want to work hard and see results, he’s the trainer for you. He has creative workouts with intense energy and drive. You won’t be disappointed! I’m definitely looking forward to many more sessions with him. So stoked I found him on the Windward Side!

Get In touch

Please fill out my contact form with your basic information and fitness goal. I promise not to SPAM you, it will only be used to contact you and get your fitness goal in mind. You may also just call me 808-291-9044