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 2017, 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™



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 12-15 min., which scientifically proven equals a 2 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.