Twinsister. One Dream. Ten World Records

Squattwins

Julia & Stephanie

Hall A1 - Performance Arena

The Squattwins, Julia and Stephanie Mueller, are extreme athletes and world record holders with an extraordinary story. After a congenital heart defect diagnosis in their early twenties, they made a life-changing decision: to become the best version of themselves.

Since then, they’ve broken 10 official world records as a duo—including 1,000 km of cycling in 12 hours, and climbing the equivalent of Mount Everest four times each on the Stairmaster in 24 hours. But their mission goes far beyond physical performance.

In their speech, they’ll share how mental strength, daily mindset training, and relentless belief fuel their success. They manifest each goal before achieving it, focus on progress stage by stage, and see every setback as a chance to rise stronger. Their message: believe 100% in yourself—no doubts, no excuses. If you commit fully, the impossible becomes possible. Let their story inspire your transformation.