Believe Sleeve — Feel Your Body. Trust Yourself. Perform.

The Problem

Fear Is Invisible.
Its Effects Aren't.

Every gymnast knows what it feels like to be physically ready but mentally frozen. The worst part? No existing technology addresses this like Believe Sleeve. Coaches can see your form. Nobody can see your fear.

You Don't Know When Fear Strikes

Stress responses fire before you consciously register them. By the time you feel anxious, your muscles have already tensed, your technique has already shifted, and your window for correction is gone.

Coaches Only See the Outside

A coach watches your arms, your feet, your posture. They can't see your heart rate spike. They can't see your skin conductance jump. The most important performance data is completely invisible to everyone in the gym.

Wearables Solve the Wrong Problem

Fitness trackers count steps. Smartwatches track sleep. Zero wearables exist that are designed for high pressure athletic performance, real-time stress response, and in-the-moment confidence. That gap is exactly what the Believe Sleeve fills.

Training Doesn't Transfer

You nail every skill in practice. The moment pressure arrives: judges, competition, and high stakes moments.oments. Everything changes. Without physiological data that bridges practice and competition, you're guessing at what goes wrong.

Without Believe Sleeve

On the Beam. 30 Seconds to Go.

Your heart is pounding. Your forearms are tighter than they should be. Something feels off but you can't name it, can't quantify it, can't tell if it's fear or fatigue or just nerves.

You hesitate. The moment passes. You either bail the skill or push through with compromised form.

Afterward, you have no data. Nothing to learn from. Same thing happens next competition.

With Believe Sleeve

On the Beam. 30 Seconds to Go.

The sleeve detects your EDA spiking and EMG tension climbing above your baseline. You feel a brief cool pulse on your wrist, the cue you've trained with for weeks.

Your nervous system knows what it means. You exhale. Shoulders drop. Tension releases. Your body does exactly what it's practiced ten thousand times.

After practice, you review the data. You know exactly when fear hit, how you responded, and how to train that specific moment.

The Technology

Four Sensors.
One Complete Picture.

Each sensor captures a different dimension of your performance state. Together they give an unprecedented window into what your body is actually doing under pressure.

💓 01

Heart Rate

Optical Photoplethysmography · MAX30101

A small infrared light shines through your skin and measures how your blood volume changes with each heartbeat. It's the same technology in your Apple Watch, but we're using it differently. We're not tracking fitness. We're tracking arousal state. A sudden spike in HR before a skill is a clear signal that your nervous system is activated, regardless of physical exertion level.

Why it matters for gymnastics: Distinguishes pre-skill anxiety (nervous system, fixable) from physical fatigue (training load, different solution). Your coach now has a number, not a guess.

⚡ 02

Muscle Tension

Electromyography (EMG) · Surface Electrodes

Your muscles generate tiny electrical signals every time they contract. EMG electrodes on the skin pick up these signals without any needles or discomfort. When fear activates, your muscles tighten involuntarily, including muscles that shouldn't be involved in the skill. This EMG data makes that visible and measurable for the first time.

Why it matters for gymnastics: Over-tense forearms before a bar release, a rigid core before a tumbling pass. These are fear responses that wreck technique. Now you can see them, name them, and train them away.

🌡️ 03

Stress Response

Electrodermal Activity (EDA) · Skin Conductance

EDA measures how well your skin conducts electricity, a value that shifts based on how active your sweat glands are. Stress activates sweat glands microscopically, before you feel anxious, before your muscles tighten, before your heart rate rises. EDA is the earliest stress signal your body produces. It's the same technology used in professional research labs and elite sports science programs.

Why it matters for gymnastics: EDA fires before you consciously feel afraid. That early warning is exactly what triggers the feedback cue, giving you a reset before fear has fully taken hold.

📐 04

Motion Tracking

Inertial Measurement Unit (IMU) · ICM-42688

The IMU combines an accelerometer (measures linear movement) and a gyroscope (measures rotation) to track exactly how your arm is moving at any given moment. This data gives context to everything else. When heart rate spikes, was it during approach? Landing? Waiting? Correlating movement with physiological data is where the real insight lives.

Why it matters for gymnastics: "She always hesitates in the approach" becomes "her EDA spikes 0.8 seconds before the hurdle, EMG overtension follows, and she decelerates." That's a training prescription, not a vague observation.

Feedback Intensity Simulation

❄

Cool Cue

Relax · Breathe · Reset

♨

Warm Cue

Engage · Focus · Drive

The Feedback

A Cue Your Body Understands

When the sleeve detects stress, it activates a small thermal element pressed against your wrist: a Peltier module that can produce a gentle cool or warm sensation on demand.

This isn't just a vibration or a beep. Temperature cues are processed by a different part of the nervous system, one that bypasses the cognitive noise of competition anxiety. Over training sessions, your brain learns to associate the cool pulse with calm, and begins to respond automatically.

No screen. No sound. No distraction. Just a signal your body trusts.

❄

Cool pulse = calm down

Triggers before stress peaks. Prompts exhale, muscle release, mental reset. Associated with: beam dismounts, bar releases, floor landings.

♨

Warm pulse = engage

Fires on low arousal or energy dip. Prompts activation, focus, drive. Associated with: floor run-ups, vault approach, second rotation.

All temperature changes are brief (under 2 seconds) and gentle, comparable to picking up a cool glass of water.

The Experience

From Unboxing to Competition Day

The Believe Sleeve is designed to fit naturally into your training routine. No complicated setup, no app learning curve on competition day.

👕 01

Put It On

Slide the sleeve onto your forearm like a compression sleeve. The sensors self-calibrate to your baseline within 60 seconds. No gel, no wires, no setup.

📊 02

Train With It

Practice as normal. The sleeve silently records your physiological state throughout the session: every spike, every moment of tension, every wave of calm.

❄ 03

Feel the Cue

When stress is detected, a gentle thermal pulse fires. You practice responding to it: breathe, release, reset. Over time, the cue trains your nervous system automatically.

🏆 04

Review & Improve

After practice, review your session data. See exactly when your stress peaked, which skills triggered tension, and how your body responded. Training becomes targeted, not guesswork.

BELIEVE

The Founder

This Project Is Personal.

Layla Kelch

Founder · Level 8 Gymnast

STEM Leader · Class of 2029

The Believe Sleeve wasn't born in a research lab. It was born on a gymnastics floor, from a question Layla Kelch couldn't stop asking: why do athletes hesitate on skills they've already mastered?

As a Level 8 competitive gymnast training 20–24 hours a week, Layla has seen firsthand how fear doesn't just hurt performance. It causes injury. A gymnast who commits halfway is more dangerous than one who fully goes or fully stops. That observation became the foundation for this project.

The Believe Sleeve is her AlphaX STEM innovation project combining sports psychology, biomechanics, and wearable technology, built by someone who understands the problem not just intellectually, but physically.

"I built the Believe Sleeve because fear doesn't just hurt your performance. It becomes injury. Athletes deserve a tool that catches hesitation before their body pays for it."

— Layla Kelch, Founder

Background

Layla is a 9th grade student-athlete from Central Texas completing her first year of high school with a 4.0 GPA across honors and dual-credit coursework, including Honors Biology, Honors Geometry, AP Human Geography, and College Algebra through Kilgore College.

As a competitive gymnast, she advanced through Levels 4, 5, and 6 in under two years and has competed at the regional level, most recently at Regionals in Oklahoma City. She is now advancing to Level 8 as an optional gymnast, with aspirations to compete on the United States Air Force Academy Women's Gymnastics team.

In Civil Air Patrol, Layla serves as Cadet Chief Master Sergeant and First Sergeant. She has attended the USAFA Gymnastics Camp four consecutive years, experiences that have strengthened her commitment to earning an appointment to the Academy as a member of the Class of 2033.

Credentials

4.0 GPA — Honors & Dual-Credit

Honors Biology, Geometry, English I, AP Human Geography · College Algebra through Kilgore College · 9th grade

Level 8 Optional Gymnast — Regional Competitor

20–24 hrs/week training · Levels 4→6 in under 2 years · Regionals, Oklahoma City · Advancing to Level 8

Civil Air Patrol — Cadet Chief Master Sergeant & First Sergeant

Cadet leader and mentor · On track to earn the Spaatz Award, the highest achievement in the Civil Air Patrol cadet program, projected by junior year

Goal: United States Air Force Academy, Class of 2033

Aspires to compete on the USAFA Women's Gymnastics team · USAFA Gymnastics Camp attendee, four consecutive years

AlphaX STEM Innovation — Believe Sleeve

Wearable technology · Sports psychology · Biomechanics · Built from personal athletic experience

Who It's For

Built for Athletes Who Compete

Starting with gymnastics, the sport that demands the most from the brain-body connection under pressure.

🤸

Gymnastics

"My body freezes every time the pressure is real."

The sport that puts gymnasts most alone on the apparatus, under lights, in silence. The Believe Sleeve's initial design is optimized for gymnastics: beam, bars, floor, and vault. Specific baseline profiles, specific cue timing.

🏃

Track & Field

"I overtense at the block every single time."

Explosive sports where milliseconds matter and muscle efficiency is everything. EMG data on starting block tension, arousal level at race start, and post-race recovery patterns create a new layer of coaching precision.

🎯

Precision Sports

"The pressure just gets in my head."

Archery, shooting, diving, figure skating, golf. Anywhere technique meets high stakes pressure. The Believe Sleeve's real-time stress detection and feedback cue are directly applicable to any sport that demands accuracy under duress.

Technical Specs

What's Inside

Current planned hardware for the v1 prototype. Subject to change based on testing and feedback.

Microcontroller	ESP32-C3 (WiFi + BLE)WIP
Heart Rate Sensor	MAX30101 Optical PPGSourced
EMG Sensor	Myoware 2.0 / Custom ElectrodesWIP
EDA / Stress	GSR Skin Conductance (2 electrodes)WIP
Motion (IMU)	ICM-42688 (6-DOF Accel+Gyro)Sourced
Thermal Feedback	Peltier TEC1-12706 + DRV8837C driverSourced
Power	LiPo 3.7V / 500mAh (target 4–6hr session)
Form Factor	Forearm compression sleeve, target ~8oz
Connectivity	BLE to companion app (in development)
Data Logging	On-device SD card + BLE stream

Development Roadmap

Phase 1

Bench Prototype

All sensors wired on breadboard. Firmware reading and logging all 4 data streams. Peltier safety-tested.

In Progress

Phase 2

Wearable Form Factor

Sensors integrated into a sleeve. Wireless data transmission. First real-body wear testing.

Up Next

Phase 3

Athlete Testing

Beta testers from gymnastics programs. Data collection. Feedback loop. Algorithm refinement.

Planned

Phase 4

V1 Launch

Refined hardware, companion app, coach dashboard. First limited production run for early adopters.

Planned

Early Access

Help Build This

The Believe Sleeve is in active development. Your honest feedback directly shapes what gets built. Takes 2 minutes, and it genuinely matters.

Part 1 of 4 — About You

Your Name *

Email Address *

Your Age

Your Location (optional)

Your Role *

How long have you been in gymnastics?

Part 2 of 4 — The Problem

Have you ever hesitated on a skill you already knew how to do?

Yes, frequently

Yes, occasionally

Rarely

Has fear or hesitation ever affected your performance or caused an injury?

Yes, it caused an injury

Yes, hurt my performance

Not yet

Describe a specific moment when fear or hesitation got in the way. What happened?

Part 3 of 4 — The Believe Sleeve

Overall, how interested are you in something like this? (1 = not at all · 10 = I need this now)

Which features would matter most to you? Select all that apply.

Knowing in real time when my stress is spiking during a skill

The physical thermal cue to help me reset mid-performance

Seeing my muscle tension data after practice

Finding patterns in when fear is affecting my performance over time

Sharing my physiological data with my coach

Reducing my risk of hesitation-related injury

Building confidence through data and feedback over time

Would you wear this in practice? In competition? Why or why not?

Part 4 of 4 — Honest Feedback

What concerns or doubts do you have about this idea?

What would make the Believe Sleeve better? Any suggestions?

Any other thoughts you want Layla to know?

✓

You're On the List

Thank you. Your feedback has been saved and will directly shape what gets built.
We'll reach out when the first prototypes are ready for real-world testing.