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Turning Body Composition Data into Daily Training Actions for Trainers

WHY THIS MATTERS

Trainers struggle to turn body composition data into daily training actions. This dashboard removes friction and makes data-driven training intuitive and fast.

Trainers struggle to turn body composition data into daily training actions. This dashboard removes friction and makes data-driven training intuitive and fast.

Figma Prototype

MORE WAYS TO EXPLORE

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ROLE

UX Design Lead (Intern)

UX Research
UI Design
Image Generation @gemini
Prototyping & Testing

TEAM

2 UX Design Interns 3 AI Engineer Interns 3 Engineers

DURATION

Nov 2023 - Jun 2024

Impact

Problem

Contribution

25%↑

Fitness Challenge Operational Efficiency

93%↓

Setup Time Reduction
(5 min → 20 sec)

MVP to scale

InBody USA decided to scale nationally

Impact

Problem

Contribution

25%↑

Fitness Challenge Operational Efficiency

93%↓

Setup Time Reduction
(5 min → 20 sec)

MVP to scale

InBody USA decided to scale nationally

CHALLENGE

Underutilized Body Composition Analyzers

InBody USA installed body composition analyzers in 30+ Southern California gyms, but adoption remained low.

While body composition analysis is common in South Korea, most US gym members were unfamiliar with InBody data and its value.

The Need for Automated Management

Based on operational insights, we found that group fitness challenges increased device usage when trainers actively helped members with the scanning process.

However, manual challenge management was a burden for trainers, creating the need for an automated solution.



Group fitness challenge?
A type of group training where members set shared goals, such as losing weight, compete with each other, and work toward achievement together.


RESEARCH

Understanding Operational Challenges

How many people use the device? How can we make trainers use our fitness challenges?

To uncover why devices went unused, we conducted comprehensive research across 6 gyms in SoCal during peak hours (6–8 p.m.), including a 3-month embedded study at Gold's Gym where we observed daily operations and interviewed 15 trainers.


Across all gyms, I was in the same space as more than 300 people in total, yet none of them used the devices, except for a few members who were training with personal trainers.


Through observations and interviews, I discovered that members wanted to use the devices but felt uncomfortable scanning themselves in front of others and couldn't interpret the numbers without guidance.

Market Research & Field Research Reports


Members struggled with device accessibility

  • Felt uncomfortable scanning themselves in front of others

  • Couldn't interpret body composition numbers without guidance

RESEARCH

Understanding Operational Challenges

How many people use the device? How can we make trainers use our fitness challenges?

To uncover why devices went unused, we conducted comprehensive research across 6 gyms in SoCal during peak hours (6–8 p.m.), including a 3-month embedded study at Gold's Gym where we observed daily operations and interviewed 15 trainers.


Across all gyms, I was in the same space as more than 300 people in total, yet none of them used the devices, except for a few members who were training with personal trainers.


Through observations and interviews, I discovered that members wanted to use the devices but felt uncomfortable scanning themselves in front of others and couldn't interpret the numbers without guidance.

Market Research & Field Research Reports


Members struggled with device accessibility

  • Felt uncomfortable scanning themselves in front of others

  • Couldn't interpret body composition numbers without guidance

Trainers had pain points regarding fitness challenges

Member Accessibility Barrier 

Members struggled to interpret the data without trainer guidance, creating dependency on already-busy trainers.

Animated Charts: Regional Data Over Months

Time-consuming manual result management



Recording results in Excel increased daily workload by approximately 30%.

Low Motivation



The operational challenges caused trainer engagement to drop, diminishing use of body composition data.

Despite these challenges, fitness challenges remained valuable because they naturally aligned body composition tracking with long-term behavior change if we could reduce operational friction while maintaining human guidance.


KEY INSIGHT

Adoption failed not from lack of user motivation, but because trainers bore all the operational burden without proportional rewards.

Research Question

"How might we integrate body composition insights into trainers’ natural workflow in a sustainable way, so that it feels like a benefit rather than a burden?"

IDEATION

From Trainer Burden to Trainer Tool

Initially, we believed that a data-syncing dashboard for managing fitness challenges would motivate trainers to adopt the device by eliminating manual record-keeping.

While this approach reduced operational friction, it failed to address a more fundamental issue: trainers’ need for recognition, ownership, and visible impact.


Not Just Automation, but Motivation

Although automation saved time, it did not give trainers a compelling reason to initiate device usage with members in the first place.

How can we make this more rewarding?

To address this, we designed a challenge management dashboard that reframes trainers not as administrators, but as "expedition partners."


Through the dashboard, trainers:

  • Build fitness challenges using body composition data

  • Track and interpret member progress

  • Guide members through shared fitness journeys

By making trainers’ contributions visible, social, and ongoing, the system transforms their role from background facilitator to recognized guide.


WIREFRAMES & TASK FLOW

Visualizing abstract concepts into solution

Following the research and ideation phase, I led the design process by translating abstract concepts into wireframes and task flows.

To ensure clarity and alignment across the team, another designer and I documented these flows for effective handoff to developers and stakeholders.

IDEATION

From Trainer Burden to Trainer Tool

Initially, we believed that a data-syncing dashboard for managing fitness challenges would motivate trainers to adopt the device by eliminating manual record-keeping.

While this approach reduced operational friction, it failed to address a more fundamental issue: trainers’ need for recognition, ownership, and visible impact.


Not Just Automation, but Motivation

Although automation saved time, it did not give trainers a compelling reason to initiate device usage with members in the first place.

How can we make this more rewarding?

To address this, we designed a challenge management dashboard that reframes trainers not as administrators, but as "expedition partners."


Through the dashboard, trainers:

  • Build fitness challenges using body composition data

  • Track and interpret member progress

  • Guide members through shared fitness journeys

By making trainers’ contributions visible, social, and ongoing, the system transforms their role from background facilitator to recognized guide.


WIREFRAMES & TASK FLOW

Visualizing abstract concepts into solution

Following the research and ideation phase, I led the design process by translating abstract concepts into wireframes and task flows.

To ensure clarity and alignment across the team, another designer and I documented these flows for effective handoff to developers and stakeholders.

DESIGN

Gamification for Member Retention

The dashboard introduces a trainer ranking system, but the core metric isn't just activity, but it's impact.

By visualizing how active challenges correlate with higher Member Retention Rates, the system motivates trainers to use the device as a strategic tool to manage their clients and stabilize their income.

a cell phone on a bench

Challenge Training Dashboard

a cell phone on a bench

Generative AI challenge creator

Instead of manually filling out spreadsheets, trainers simply input a natural language prompt (e.g., "It's a 3-weeks challenge and I want to check-up twice a week").

The AI instantly generates a structured schedule and daily milestones based on the input, reducing a 5-minute task to just 20 seconds.

a cell phone on a ledge

Challenge Training Dashboard

a cell phone on a ledge

Real-time challenge progress tracking 

Trainers can monitor member progress at a glance through key metrics: weight change, body fat %, and scan frequency.

This eliminates the need to manually check Excel sheets, saving 20+ minutes per week per trainer.

Challenge Training Dashboard

Enabling proactive coaching

The core of the trainer's view is a dashboard that visualizes each member's progress. It integrates historical health data with live challenge performance, creating an environment where trainers can immediately identify and respond to a member's needs.

DESIGN SYSTEM
Building a sustainable and scalable design system

  • Led the development and implementation of a design system to ensure consistency across TV, kiosk, app, and web products.

  • Introduced a color-token system to standardize colors across platforms.

  • Proposed a clear and systematic naming convention for developers to reduce development time and improve workflow efficiency.

Universal Design System
What is color token system?
USER TESTING

Test and Iterate

We iteratively conducted A/B design testing for 'user selection' feature and user testing with trainers to validate which feedback mechanisms most effectively increased trainer engagement.

LESSON LEARNED

Designing for All Stakeholders

Effective solutions require considering everyone in the system. I initially focused on InBody's business needs, but conversations with gym staff revealed that prioritizing user experience drives value for all stakeholders like trainers, members, and the business.


Designer as Bridge Builder

Co-design sessions with developers and PMs taught me to translate field insights into actionable solutions. We bridge user needs with technical implementation.

LESSON LEARNED

Designing for All Stakeholders

Effective solutions require considering everyone in the system. I initially focused on InBody's business needs, but conversations with gym staff revealed that prioritizing user experience drives value for all stakeholders like trainers, members, and the business.


Designer as Bridge Builder

Co-design sessions with developers and PMs taught me to translate field insights into actionable solutions. We bridge user needs with technical implementation.

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