Nika & Nino Cristiani

Voted “ Inventors Of The Year 2022”


Founded in 2015

The FOunders“Our mission is to  empower people to look better, feel better and perform better with the push of a button only and integrate fitness easily and effortlessly into their daily lifestyle. We create the things we wished existed. It’s not MAGIC, but it’s close!”

Nika & Nino Cristiani have earned the esteemed title of " Inventor of the Year for 2022 “ for their  innovative GYM IN A BOX smart apparel line!

Recognized for their  pioneering work in advancing electronic muscle stimulating & body sculpting technology “ToneUp15 ®️ “ and for revolutionizing the fitness & beauty industry with cutting SMART Apparel & Beauty Devices: The pioneers in advanced Healthy Aging Solutions: NIKA & NINO Cristiani | Cristiani’s Balance, Fitness & Nutrition, LLC Beverly Hills, California

  Gym In A Box™  Smart ActiveWear fits perfectly into this new Zeitgeist. "



We at GYM IN A BOX are Innovation driven, powered for more!
Nika Cristiani, CEO
“If you want something new, you have to stop doing something old!”
The most important element of growth is differentiation. If you want to grow, then you need to differentiate, and to differentiate, you must innovate differently to create and sustain competitive advantage. That is our companies mission.


It does the work… You get the results!

Like all of you, I had problems getting older and staying in shape. Exercise equipment was either too expensive, cumbersome and time intense. Training with weights or any kind of exercise equipment was just affecting my joints and it was hard for me to catch up with my workouts due to my very busy work schedule. I would wake up with a sore neck, a headache, or feel like I needed a nap, even though I slept 8 hours. 

When I invented GYM IN A BOX™  and its ToneUp15® STIM-FIT Technology in 2015, it took over four years to develop because I wanted it to have everything you could ever want in a new fitness wearable.

I made sure you could adjust the intensity of the patent pending muscle massaging boosters, so you could have the exact support you need as an individual, regardless of your body type. 

I also wanted to create body contouring apparel that would last, so we made sure we only but used high-end materials and worked with L.A's most experienced fitness tech experts to guarantee GYM IN A BOX ™ Electronic Waist Trainer to be a premium product.

I wanted them to be affordable for everyone, so there are no recurring monthly costs for gel pads, etc , because there are none. 

OurToning Technology infused Wearables are wireless, you can even wear them at work, underneath your clothes, to get your fitness job done wherever you are, whatever you do!

I back GYM IN A BOX with  a 30-day money back guarantee and free basic shipping in the US!

Not only that, I do all my own manufacturing in my home state of California ! 🇺🇸 

I personally guarantee that GYM IN A BOX™ will be the most efficient fitness device you’ll ever own.

Nika Cristiani, Inventor & Creator of GYM IN A BOX™

Introducing GYM IN A BOX ®  The most prestigious Smart Fitness product line - revolutionizing workouts! 

Where luxury meets innovation!


Say goodbye to traditional workouts, and experience a new era of fitness. 

Get ready to redefine your body in style.

Revolutionizing the fitness world using exclusive ToneUp15® micro current technology established in 2015 in the USA.


Our award-winning technology, ToneUp15®, is meticulously designed to elevate your fitness routine. Developed by the esteemed Cristiani duo, recipients of the "Inventors of the Year" award, this luxurious gem is a testament to their 25 years of pioneering EMS Fitness Technology.


GYM IN A BOX - the epitome of luxury and innovation in fitness. With our award-winning Smart Fitness products and cutting-edge ToneUp15® technology, we're here to revolutionize your workout experience. Let us remove the barriers and unveil a new world of health, beauty, and fitness. Join the elite and elevate your fitness routine!


With over 25 years of expertise in creating and manufacturing cutting-edge EMS devices, we have achieved incredible results for elite clients worldwide we have exceeded expectations for elite clients worldwide including celebrities and pro athletes. 

Our patented ToneUp15® technology revolutionizes workouts, redefining the fitness experience. 


Unleash your full potential with GYM IN A BOX - where luxury meets fitness. Our innovative ToneUp15® technology will revolutionize your workout routine. Experience the ultimate in muscle stimulation and feel the luxury of fitness like never before. 


With a prestigious clientele including A-list celebrities, elite athletes, and discerning individuals worldwide, the Cristiani family's legacy speaks for itself. Immerse yourself in the opulence of ToneUp15® technology, a patented marvel that revolutionizes the way we train our muscles.


The Cristiani’s groundbreaking Smart Apparel Brand established in 2015, introduces ToneUp15®, a patented new miniaturized muscle stimulation technology. 

Redefining your workout experience like never before. Elevate your training with the finest in EMS Training and innovative device manufacturing. Experience fitness decadence today.


Since the beginning of time, humans have been striving to find faster and easier ways to become physically fit. From running, weightlifting, and endless cardio exercises, the challenge has always been to find the fastest way to improve our physical appearance. 


ToneUp15® muscle stimulation technology is now available for anyone to use, no matter their level of fitness. Short, intensive and regular sessions gets results faster and more efficiently than traditional exercises. It has been a key resource for many of our clients, and has helped to build healthier, better looking bodies in less time than traditional exercise protocols. 


For those who are looking to keep their workout regime going even when they are away from the gym, GYM IN A BOX’s compact and easy to transport devices allow everyone the chance to feel the flexibility of a gym in their own home or on the go. 


GYM IN A BOX is changing the fitness industry and revolutionizing the way people work out with its innovative fitness product. With its cutting-edge technology and mobility, GYM IN A BOX is the perfect fit for anyone looking to get in better shape, quicker. 


However, in today’s modern society, due to the constraints of time and other factors, people have difficulty maintaining a consistent exercise schedule. Moreover, constantly doing the same exercises can become mundane and unproductive over time. As a result, people often resort to unhealthy alternatives like crash diets and unhealthy lifestyles. 

Luckily, GYM IN A BOX has emerged as the answer to many people’s fitness goals. Designed to provide users with  easy-to-use wearables, GYM IN A BOX gives people access to their body’s muscles in a much shorter amount of time, with no injury risk. In essence, GYM IN A BOX has revolutionized the way we exercise and stay in shape. 

By using miniaturized muscle stimulation technology, GYM IN A BOX offers its users a comprehensive workout regimen that can easily be done at home or on the go. This means that with GYM IN A BOX, users can do a full body workout anytime, anywhere. It’s even easy to take along on trips and keep as a daily routine. 

Unlike what many people think of as traditional exercise, GYM IN A BOX does not involve hours of lifting weights or running miles on end. Instead, it uses muscle stimulation technology that can be done with minimal exertion. This technology helps target individual muscle groups without having to do the same tedious routine every day.  

In addition, GYM IN A BOX’s advanced technology also helps users work on improving their overall strength, flexibility, and endurance. By using this technology, users can increase their physical strength while also improving their overall health, all without any injury risk. 

 The benefits of GYM IN A BOX are clear: not only does it offer people an easier and faster way to stay in shape, but it also helps them do so without any worries of injury. This makes GYM IN A BOX a major advancement in the health and fitness industry and provides people with a way to attain their personal goals without having to sacrifice hours of their day.  

GYM IN A BOX: Revolutionizing Fitness with Smart Technology


Welcome to a whole new world of fitness! GYM IN A BOX, the awarded Smart Fitness product line and technology, is here to change the game. Founded in 2015 by Nika and Nino Cristiani in the heart of Beverly Hills, our mission is simple but powerful: to eliminate barriers and help individuals reach their health, beauty, and fitness goals. With cutting-edge technology and a touch of sass, GYM IN A BOX is destined to make a difference.

Reinventing the Workout Routine:

Gone are the days of endless repetitions and strenuous workouts. GYM IN A BOX provides a fresh approach to fitness by utilizing the groundbreaking muscle stimulation technology called ToneUp15®. This patented technology allows us to reshape how people work out, bringing a whole new level of convenience and efficiency to your fitness routine.

Say goodbye to traditional weightlifting and lengthy cardio sessions; GYM IN A BOX introduces miniaturized muscle stimulation devices that are not only easy to use but also travel-friendly. These wearables and beauty devices allow you to activate and engage all your muscles in a matter of minutes, eliminating the risk of injury commonly associated with intense workouts.

 Accessible to All:

At GYM IN A BOX, we believe that fitness has no restrictions. Regardless of your current fitness level or age, GYM IN A BOX empowers individuals to reach their next level. Our innovative technology provides comprehensive muscle activation, ensuring that every part of your body gets the attention it deserves. With GYM IN A BOX, the fitness journey is no longer limited to athletes or fitness enthusiasts — it's for everyone.

 Convenience and Portability:

No more rushing to the gym or struggling to fit workouts into your busy schedule. GYM IN A BOX brings fitness to your doorstep, offering unparalleled convenience and portability. Whether you're traveling, at the office, or enjoying the comfort of your own home, GYM IN A BOX enables you to work out anytime, anywhere. With our smart wearables and compact devices, you can maintain your fitness routine effortlessly, and most importantly, without compromising your other commitments.

Experience Maximum Results:

Why settle for mediocrity when you can achieve greatness? GYM IN A BOX ensures that every session is optimized for maximum results. The combination of state-of-the-art technology and user-friendly design makes for an unparalleled fitness experience. By activating all your muscles and providing targeted stimulation, our devices enhance muscle tone, boost strength, and improve overall fitness levels. Expect to see visible results sooner than you can imagine!


When it comes to reaching your health, beauty, and fitness goals, GYM IN A BOX stands head and shoulders above the rest. With our innovative ToneUp15® muscle stimulation technology, we have revolutionized the fitness industry. Embrace the future of fitness, break free from limitations, and embark on a fitness journey that is convenient, effective, and most importantly, fun! Wherever you are in your fitness journey, GYM IN A BOX is ready to help you take the next leap. Join the revolution and make a difference in your health and well-being, one smart workout at a time!

Learn more:


Nika is a Celebrity Trainer and experienced Fitness Tech entrepreneur. She is a certified STIM-FIT Power trainer and a pioneering force in the field of Stim-Tech application in the US. Nika has created the  ‘Gym In A Box’ concept to empower women to look better,  feel better & perform better. Especially since COVID-19 literally forced everyone to train at home, Nika felt this was the perfect time to focus on creating affordable at home toning products based on cutting-edge technology. Nika is the Design Director for the GYM IN A BOX™ ultimate toning technology empowered active wear, designed, made and manufactured locally, in Los Angeles, USA. Nika Cristiani created THE WORLD'S FIRST ELECTRONIC CORSET, GYM IN A BOX ® CoreWrap.

Nino Cristiani CPO
Nino is a Celebrity Trainer and  STIM-FIT  pioneer in Germany and the US. He is an unrivaled expert in the application potential of STIM-FIT Technologies. As the CPO, Inventor and Developer of GYM IN A BOX™'s patented ToneUp15™ Technology, Nino has a deep seated technical and application knowledge and is highly skilled in the design of effective fitness routines around innovative training technologies. Together with Nika Cristiani, Nino has been running the exclusive E-Balance PowerGym in Los Angeles since 2016, providing high-end Celebrity Training specialized on  Body Toning Technologies, reaching great benefits for his exclusive clientele. With GYM IN A BOX ® they are now happily providing the consumer with the amazing benefits of this scientifically-proven and totally safe technology.

Headquarters Los Angeles, CA "Made with love in L.A. "

About Us – Changing fitness the way Netflix changed entertainment 

Cristiani's Balance, Fitness & Nutrition, LLC is a Los Angeles based manufacturer developing a range of smart-clothing based fitness apparel that feature integrated fitness technology for massage, body toning and skin improvement.

Our aim is to become for the fitness segment what Netflix has become for the entertainment space, putting the consumer in charge of where and when to engage in fitness through active fitness clothing. 

Based on scientifically proven muscle stim technology, we developed ToneUp15® Toning Tech. Wire Free, no Gel Pads, washable ( hygienic), seamless smart fabric integration, invisible technology, shape wear effect, fashionable designs and comfortable fit. Our patented technology is called “ ToneUp15® “ , since the recommended training time  is 15 min., which scientifically proven equals a 2-3 hour conventional workout session with weights.

Our Smart Fabric toning apparel provides a ‘Gym in a Box ® ’ benefit that allows fitness conscious consumers to achieve effective workouts simply by wearing it - either in workouts or everyday situations - without the time and cost disadvantages of having to use a Gym.

Our ultra effective activewear can also be incorporated in conventional workouts , at the gym and yoga studio, outdoors on hikes or other activities, to deliver an 18 times efficiency in just 15 minutes.