Urs Kalecinski, known as "the miraclebear," was born in 1998 in Schwäbisch Gmünd, Germany, with Polish
roots.

His passion for sports runs in the family—his mother was a ballerina, his father a Polish weightlifter, and his older brother Sergej competed as a Bundesliga gymnast. Inspired by Sergej, Urs discovered his
love for bodybuilding at an early age.

At just 14 years old, he entered a gym for the
first time, accompanied by his brother. Without a structured training plan but with clear goals, he aimed to bench press 100 kg by his 15th birthday—and he
did. At 16, former bodybuilder Paul Buksbaum noticed his potential. Observing Urs' dedication and training style, Buksbaum was impressed by his physique and
symmetry, convincing him to compete in bodybuilding.

Following his success, Kalecinski moved to
Switzerland in 2019 for a job opportunity and to fully commit to his dream of becoming a professional athlete. His goal that year: earning his IFBB Pro Card.

Working in a gym while preparing for a Pro
Qualifier—a competition every aspiring IFBB Pro must win—he finally succeeded on his third attempt. He won the Iceland Pro Show Qualifier in the Classic
Physique category, securing the coveted IFBB Pro Card at just 21 years old.

Returning home briefly, he became a full-time
influencer. With his rising success, he secured his first sponsorship deal with ESN, allowing him to focus entirely on his professional bodybuilding career.

In August 2025, Kalecinski announced that he would be moving up to the Open division. This was not an easy step for him, as he had been considered a top favorite for this year’s Classic Physique title.

However, during his prep, which began in May, Kalecinski realized it was becoming increasingly difficult to make weight for the division’s limit, even on very low calories. On top of that, he had been struggling with mental challenges for some time. He had lost his love for the sport. The gym was no longer the place that made him happy.

Kalecinski pulled the plug and decided to switch classes. Mentally, this was the best decision for him: no more forcing himself into a weight cap, no more unnecessarily losing muscle – and most importantly, he rediscovered the joy of training.

The bodybuilding community was divided over his decision. Many doubted he could succeed, saying he was “far too small.” But Kalecinski wasn’t discouraged. At his debut in Milan, he immediately proved the critics wrong by winning the Pro Show.

Kalecinski is now a Mr. Olympia competitor – both in Classic Physique and in Men’s Open Bodybuilding. In the coming years, the clear goal is to break into the Top 5.