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Online Personal Fitness & Nutrition Training

Helping you become your best self


NO matter what your fitness goals are, i have a way to get you there


with a combination of in-person & online training, i provide training programs flexible to fit your lifestyle

Online & MOBILE Personal Nutrition Training

Track stats & meal plans anytime, anywhere,
making healthy eating simple 

get motivated & see weight loss results

every training and nutrition program is custom made to your fitness needs and overall situation

Fitness that works for your

An online personal trainer can help you reach your health and fitness goals with all the convenience of training in your own home, gym, or other personal space. I specialize in improving fitness as well as body composition and use physical training, nutritional changes, and improvements in thinking to help you reach your goals.



Strength Coaching

I help busy professionals reach their highest levels of strength for personal and professional performance.


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Fitness Coaching

I use an online fitness coaching program to help both men and women reach their peak fitness levels.


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RUN Coaching

Get an online cardio program to a quicker mile time, faster sprint, or solid cardio workout program and improve your goals.


Helping meet your 
fitness goals

Woman resting after weight lifting

Nathan has been great. As an online coach, I think he strikes a great balance of putting the onus of responsibility on you as the client while also individualizing a diet and training that best suits your lifestyle and goals. He is extremely responsive to questions and with feedback. I started out as a complete beginner to weightlifting and he has made me feel comfortable and safe along the way by providing regular feedback of my form. I can’t believe how much progress I’ve been able to make in terms of my strength and physique. I wish I had found him and this service years ago!!

Genevieve M

Strength Program

I’ve been working with Nathan for ~7 weeks, and it has been overwhelmingly positive. Nathan responds to messages within a few hours. I can honestly say that the workouts are the hardest I’ve ever done. I came from doing all 3 P90X programs, and really liked the cardio/plyo exercises. Nathan let me continue to use those, in combination with regular training. The app is also really easy to use, great for tracking everything. Additionally, the meal plan was constantly varied, so I never got bored with foods. I often had to make adjustments to make the macro’s work with foods I had available, but nothing too bad. Highly recommend Demetz for the whole package – nutrition and training.

Jason L

Strength & Nutrition Programs

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Why use an online personal trainer & nutrition coach?

An online personal trainer and online nutrition coach can provide you all of the services a face-to-face professional would. I pride myself on making the training environment interactive, easy to use, simple to follow, and full of all the information you need to be successful. Whether you are located in the USA, Canada, India, Australia, the United Kingdom or another country, online personal training and online nutrition coaching can help you reach your goals. Beyond a high quality of service on par with anything you will receive in face-to-face training, the biggest benefits of my online personal training and nutrition coaching are convenience and savings. The cost for online services are significantly lower than those for face-to-face services, and you can complete the process from anywhere you want—at the gym, at home, at your office, or on the road!

It is true that I do not have the face-to-face time with you, but the message system of our app allows you to send us questions 24-7. It is also true that I am not there to show you exercise form—but I have a video attached to every exercise in the app, allowing you to know exactly what you need to do, plus you send form videos for me to review. There are many other benefits of my online training, nutrition coaching, and the app we use, and this creates a dynamic that ensures your success as long as you put in the work.

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