Simone Biles and 'The Twisties'

When you hear "the twisties," you might picture a simple mental block, but it's actually a neurological crisis. It strips gymnasts of spatial awareness mid-air, making it impossible to tell up from down. Simone Biles experienced this at Tokyo 2020, forcing her to withdraw from multiple events to avoid serious injury. It's a dangerous mind-body disconnect affecting proprioception itself. There's much more to this fascinating story than you'd expect.

Key Takeaways

• The twisties cause a dangerous mind-body disconnect mid-air, stripping gymnasts of spatial awareness and making it impossible to control body position.
• Three interconnected systems — vestibular, proprioception, and vision — are disrupted simultaneously, causing the brain's feedback loop with the body to stall.
• Simone Biles withdrew from the Tokyo 2020 team final after one vault, with the condition unusually spreading across every gymnastics event.
• Biles spent two years rebuilding from basics, maintaining fitness, and attending therapy before returning triumphantly prepared for Paris 2024.
• The twisties aren't exclusive to gymnastics — any proprioception-dependent sport, including diving, martial arts, and jumping, carries the same risk.

What the Twisties Actually Are in Gymnastics

The twisties are a mental block that strips gymnasts of their spatial awareness mid-air, creating a dangerous disconnect between mind and body during twisting and flipping elements. When you're airborne, your brain suddenly can't distinguish up from down, leaving you unable to control your body position or stick a safe landing.

It's not a medical diagnosis, but its psychological impacts are very real. Skills you've executed thousands of times become impossible without warning. Your proprioception, the internal sense guiding your orientation, fundamentally shuts down mid-skill.

The career implications can be severe. What starts as one disorienting turn can escalate into weeks or months of inability to perform. Your brain triggers this protective shutdown to signal danger, but doing so while airborne creates an extremely hazardous situation. The twisties are considered a common issue among gymnasts at all levels of the sport.

Beyond gymnastics, the twisties can affect any sport requiring a strong proprioception sense, including diving, martial arts, and jumping.

Why the Twisties Happen: The Science of Lost Air Awareness

Three interconnected systems work together to keep you oriented mid-air: your vestibular system, proprioception, and vision. Your vestibular system detects head position during flips, proprioception senses your limb positions without visual input, and vision delivers real-time environmental cues. Together, these air sense physiological factors create seamless aerial control.

The twisties disrupt this feedback loop entirely. Your brain and body lose their communication channel mid-air, creating what athletes describe as a mental stutter step. You can't adjust your body for a safe landing because the system that normally runs automatically has stalled. Stress and anxiety can build gradually over time, meaning the twisties don't always strike suddenly but can emerge after prolonged mental strain.

The role of neuroplasticity explains why training helps. Your brain reorganizes neural pathways through repetition, making aerial movements intuitive. But stress hormones like cortisol can disrupt these pathways, especially under high-pressure competitive conditions. Athletes can counter this vulnerability through mental imagery and visualization, which activates the same neural circuits as physical practice and helps reinforce those pathways against stress-related disruption.

What Was at Stake When the Twisties Hit Biles at Tokyo 2020

When Simone Biles stepped out of the women's team final after one vault rotation, she wasn't just withdrawing from a single event—she was walking away from what could've been the most decorated Olympic performance in gymnastics history. Her Olympic medal pursuit included seven potential golds across the team event and five individual apparatus finals. That's a career grand slam opportunity most athletes never get close to.

She'd already won four golds at Rio 2016, and Tokyo represented a real shot at rewriting the record books entirely. Instead, the twisties stripped her spatial awareness mid-competition, turning calculated elite skills into genuine safety hazards.

The U.S. still earned silver, and Suni Lee won all-around gold—but Biles' own gold opportunities suddenly depended on whether her mind and body could reconnect in time. Biles described the experience as leaving her completely unable to tell up from down while airborne, making any attempt to land a skill a serious and unpredictable risk.

What made the situation even more alarming was that the twisties had spread to every event, something Biles noted was highly unusual compared to her past experiences, where the condition had typically been limited to floor and vault.

How the Twisties Brought Down the World's Best Gymnast Mid-Competition

During one vault rotation at the Tokyo team final, Simone Biles' body stopped obeying her mind. Attempting a 2.5 twisting vault, she completed only 1.5 twists, visibly lost mid-air.

Biles' unprecedented withdrawal after just one rotation shocked the gymnastics world, but it was the right call.

The mental health impact on performance becomes clear when you examine what she faced:

• Her eyes showed visible confusion upon landing
• Underrotation risked catastrophic impact on her head, back, or hands
• The twisties had spread across every apparatus, not just floor and vault
• Conscious thought was overriding her automatic movements, creating dangerous errors

What appeared flawless in prelims collapsed overnight. You can't compete safely when your mind and body disconnect at that altitude. The vestibular system, located in the inner ear, plays a critical role in maintaining the balance and spatial awareness gymnasts rely on to execute complex aerial movements.

How Biles Trained Her Way Out of the Twisties for Paris

Biles didn't just bounce back from the twisties — she systematically rebuilt herself from the ground up. After withdrawing from Tokyo, she entered therapy to address the mind-body disconnect driving her struggles. She returned to basics, practicing confident skills repeatedly before progressing to complex routines. Her brain's stored motor programs helped accelerate recovery, making overcoming technical challenges more manageable than starting over entirely.

Maintaining physical fitness remained central throughout her two-year hiatus, ensuring her body stayed competition-ready as her mind healed. By July 25, 2024, she was nailing uneven bars, balance beam, and her signature Yurchenko double pike vault during Paris podium training. Teammates noticed her excitement and strong mental state. She'd transformed her Tokyo trauma into fuel, arriving in Paris thoroughly prepared and genuinely dangerous.