Dorota Zelazny (39), Great Britain.

"My body started to change when I was thirty and I began to gain weight. I became increasingly unhappy with myself. I reached 67-68 kg (with a UK dress size of 14 / DE 40) and no longer felt comfortable in my own skin."

At the time, I worked at Wormwood Scrubs as a prison guard and had daily contact with the inmates. I was responsible for their safety and supervision, and also partly for their rehabilitation. Before that, I worked as a support worker for people with learning disabilities and mental health issues. The stressful job prevented me from having regular meals with my family, so I relied on snacks and comfort eating to cope with my difficult job. My condition was devastating.

In August 2013, I had two weeks off and during that time I learned about HYPOXI. As recommended, I completed three training sessions per week. HYPOXI has some dietary guidelines, such as consuming small portions of carbohydrates two to four hours before training and a protein-rich meal after the treatment. I followed all instructions strictly and did not do any other exercise.

When I went back to work, I already noticed some success, for example, being able to wear pants that I couldn't fit into before. My friends also started complimenting me on how good-looking I was, and that motivated me to keep going.

Previously I was at my limit, now I was at the turning point.

Within 6-7 weeks I lost approximately 10 kg (dress size UK 8/10 / DE 34/36). And not only that, my lower body got back into shape; I lost fat precisely in problem areas like my stomach and buttocks. I felt wonderful, and so I started to consider HYPOXI from a business perspective. It's incredibly fulfilling and a fantastic business idea.

After many extra hours and negotiations with HYPOXI, I quit my job as a prison guard 18 months later and opened my own HYPOXI-Sudio in London at the end of January 2015, now located at 28 Chiswick High Road W4 1TE.

I feel wonderful and look great. And now I want to help others feel just as good. I, too, suffered from low self-esteem for a long time and know how difficult it is to overcome. I'm there for my clients; unlike some fitness and health experts, my motivation is always my client. It fills me with great satisfaction to see their transformations, both physical and emotional.