Summary
Proprioception enables spatial awareness and balance without visual cues. From elite athletes experiencing "the twisties" to natural age-related decline, an out-of-sync proprioceptive system impacts movement. However, through targeted balance training and neuroplasticity, this essential "sixth sense" can be sharpened at any age.
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Close your eyes for a second. Without opening them, reach your right arm behind your back and touch your thumb to your pinky finger.
You probably nailed it on the first try. But take a moment to ask yourself: How did your brain know where your fingers were without seeing them?
You can thank your proprioception, which is often referred to by neuroscientists as the body’s hidden “sixth sense”. While vision, hearing, touch, taste, and smell tune us into the outside world, proprioception is our internal GPS. It is the subconscious awareness of your body’s position, movement, and force in space.
It’s what allows you to walk down a gravel driveway without staring at your feet, adjust your grip so you don’t crush a paper coffee cup, or scratch an itch on your nose in a pitch-black bedroom. When proprioception works seamlessly, movement feels like magic. But when this internal mapping system glitches, even the simplest actions can feel disorienting.
When the Internal GPS Glitches: Simone Biles and “The Twisties”
To understand what happens when proprioception goes out of tune, you don’t have to look any further than the 2020 Tokyo Olympics.
When Simone Biles, widely considered one of the greatest athletes of all time, and the most decorated gymnast in history withdrew from multiple Olympic events, the world was stunned. She cited a terrifying phenomenon gymnasts call “the twisties”: a sudden, complete loss of spatial awareness while airborne. “I had no idea where I was in the air,” Biles recalled.
What was happening inside her brain? According to neuroscientists at Stanford Medicine, high-level athletic movement relies on an internal model built in the cerebellum. The brain constantly performs real-time checks, comparing expected sensory input against actual sensory input from the muscles, inner ear, and eyes.
Normally, elite athletes perform complex movements on autopilot. But under intense psychological stress, the brain can attempt to force conscious control over automatic motor patterns. This creates a high-speed sensory mismatch. The internal feedback loop snaps, leaving the athlete feeling lost in space.
If the world’s most decorated gymnast can suffer a proprioceptive blackout, it exposes a vital truth: our sixth sense is dynamic, delicate, and constantly active.
How Your Body Tracks Itself
Proprioception isn’t localized in a single organ like vision or hearing. It is an elaborate team effort across multiple systems:
- Peripheral Mechanoreceptors: Thousands of specialized sensors embedded in your muscles, tendons, joints, and skin. Muscle spindles detect changes in muscle length and speed, while Golgi tendon organs measure muscle tension.
- The Vestibular System (the core sensory organ for balance): Five tiny fluid-filled structures in your inner ear track head motion, tilt, and gravity.
- The Visual System: Your eyes provide immediate visual cues to anchor your place in an environment.
- The Cerebellum & Sensory Cortex (motor movement regulation and balance control): Located at the back of the brain, the cerebellum acts as a supercomputer, processing these incoming mechanical signals in milliseconds to execute smooth balance adjustments.
Signs of Malfunctioning Proprioception
When proprioception is compromised, the signs can range from subtle awkwardness to severe balance issues. Common symptoms include:
- Frequent Clumsiness: Constantly bumping into doorframes, tripping, or knocking over drinks.
- Inaccurate Force Control: Consistently pressing too hard when writing, breaking fragile objects, or dropping things.
- Spatial Misjudgments: “Undershooting” or “overshooting” when reaching for an object.
- Postural Instability: Difficulty standing on one leg or feeling unsteady in dark rooms where visual cues are missing.
Who Struggles with Poor Proprioception?
While injuries (like an ankle sprain) or joint replacements temporarily disrupt joint sensors, certain populations experience ongoing proprioceptive differences:
- Neurodivergent Communities (ADHD & Autism): Individuals with ADHD or Autism Spectrum Disorder frequently experience differences in sensory integration, impacting motor planning and physical coordination. Interestingly, Simone Biles has spoken openly about living with childhood ADHD, highlighting how neurodivergent brains manage sensory integration in extraordinary ways.
- Hypermobility Spectrum Disorders: People with overly flexible joints (such as Ehlers-Danlos Syndrome) have looser connective tissue, which sends fainter positional feedback to the brain.
- Neurological & Peripheral Conditions: Neuropathy, stroke, traumatic brain injuries, and inner ear disorders directly impair sensory pathways.
Why Balance Fades Over Time
As we age, it’s common to notice our balance slipping. Research published in the Journal of Neurophysiology reveals that this isn’t just “getting old”, it’s a direct degradation of leg proprioception.
With age, the muscle spindle sensors in our lower legs gradually degenerate, and the nerve fibers that transmit signals to the spinal cord lose their acuity and speed. Think of human balance as an inverted pendulum rotating at the ankle joint. When ankle proprioception dims, the brain can no longer detect subtle body sways quickly enough to trigger automatic corrections, dramatically increasing fall risk.
Proof in Practice: Meet 91-Year-Old Paul
While age-related decline is real, it isn’t destiny.
On a quiet Saturday morning at the gym, I was taking my time working out when an older gentleman approached me. He looked to be in his late 70s, standing tall, energetic, and moving with purpose. We had a quick chat and then he kindly if I’d like to try his balance routine. Curious, I agreed.
For the next 15 minutes, he led me through a surprisingly challenging series of balance drills on a Bosu Ball that included single-leg stands, controlled weight shifts, and stability exercises that left my ankles burning and my core engaged. We chatted briefly, talked about skiing (yes, he still skis downhill!!) exchanged names, and went on with our weekend.
Later that week, I mentioned the encounter to a friend. She smiled immediately. “Oh, you met Paul! Did you know he’s 91 years old? He’s a legend”
I was stunned. I see a lot of buff, much older folks working out regularly at the gym, but 91? So inspiring! Even more remarkable was his medical history: he had survived a major heart attack 40 years prior, alongside double joint replacements including a hip and a knee. Yet, there he was, strength training and diligently caring for his nervous system.
Paul is living proof of neuroplasticity, the brain’s incredible ability to adapt and build new neural pathways at any age. Despite joint wear, surgical replacements, and biological aging, Paul proved that proprioception can be trained, sharpened, and maintained.
Retraining Your 6th Sense: From Toe Spacers to Balance Boards
Just like a muscle, your proprioceptive system responds to challenge. In fact, optimizing this sense has captured the attention of top medical experts looking to preserve brain and nerve health for the long haul.
CNN Chief Medical Correspondent and neurosurgeon Dr. Sanjay Gupta recently explored his own risk for cognitive decline and brain health during the filming of a documentary. To his surprise, one of the primary recommendations he received from brain specialists focused on his feet.
Because the nerves running to our feet are the longest in the human body, leaving your toes cramped in tight footwear without free movement can lead to lost sensory feedback, a state experts refer to as “sensory paralysis.” Over time, if those nerve signals aren’t used, the pathways connecting the feet to the brain begin to dim.
To safeguard his proprioception and brain health, Dr. Gupta now regularly wears toe spacers for 10 minutes a day to reactivate those forgotten sensory pathways and maintain neural mapping.
Whether you adopt Dr. Gupta’s foot-health routine or follow Paul’s gym workout, you can sharpen your internal GPS using the following simple daily habits.
Daily 15-Minute Routine to Train Your 6th Sense
Just like a muscle, your proprioceptive system responds to challenge. You can sharpen your internal GPS using simple daily exercises inspired by physical therapy guidelines:
| Exercise | How to Do It | Proprioceptive Benefit |
|---|---|---|
| Single-Leg Stand | Stand on one foot near a wall for 30 seconds. Close your eyes to increase difficulty. | Forces muscle spindles in the ankle and foot to stabilize without visual cues. |
| Tandem Walk (Heel-to-Toe) | Walk in a straight line placing the heel of one foot directly in front of the toes of the other. | Challenges narrow base-of-support dynamics. |
| Texture Walking | Walk barefoot on varied safe surfaces (grass, sand, or a bumpy foam mat). | Stimulates cutaneous mechanoreceptors on the soles of your feet. |
| Tai Chi or Yoga | Practice slow, deliberate weight shifts and flowing poses. | Enhances kinesthetic movement awareness and joint angle perception. |
Finding Your Own Balance
You don’t need to be Simone Biles twisting mid-air at the Olympic Games to appreciate or refine your proprioception. You can also be Paul, diligently doing his Bosu Ball routine at 91 years old, proving that being the oldest among our population doesn’t mean letting go of your grip on the world.
Proprioception is the silent hero of every step, reach, and turn we take. Tonight, while you’re standing at the sink brushing your teeth, try lifting one foot off the floor for 30 seconds. You’ll be giving your body’s sixth sense the tune-up it deserves.
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