Evan Zhang
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Reeha.

Your daily rehab companion.

A little play.
Every day.

Turning everyday movements into playful moments of home rehabilitation.

Watch Reeha in action
Reeha on two tablets with Indigo Design Award and MUSE Gold Winner badges
My contribution
Product Design · Product Strategy
UX Research · Prototyping
Team
Evan Zhang, Yaezi Lee, Sue Hong
Timeline
Fall 2025 · 6 weeks

MUSE Design Awards 2026 / Gold

Indigo Design Award 2026 / 2 Silver awards

Recovery takes practice. Coming back takes motivation.

Repetitive tasks, slow improvements, and limited guidance can make home rehabilitation difficult to sustain. Reeha brings guided movement, playful feedback, and provider support into one daily experience.

Meet Reeha — from a daily exercise plan to a moment of play.

Main page

The home page reduces friction at the start of each day and keeps users oriented, motivated, and connected throughout rehabilitation.

Reeha home screen with today's exercises, provider follow-up, achievements, encouragement, and a game preview

Start today’s exercise

Patients choose how they want to train, supporting focused exercise and game-based rehabilitation without adding friction.

Mode selection between exercise with a game and exercise only

Mode selection

Tutorial

The tutorial aligns movement and interaction, helping patients understand how physical actions translate into progress.

A patient following Reeha's palm-up, palm-down exercise tutorial at home

Exercising through playing

Gameplay closes the loop between movement and outcome, turning physical effort into immediate, visible feedback.

Muscular Cupcake gameplay with movement guidance, cupcake count, timer, and camera feedback

Exercise reports

The report makes progress visible, helping patients reflect on consistency and improvement across each day.

Exercise report showing session summary, streaks, and performance over time

Keep care connected

The clinic page brings prescriptions, recovery progress, treatment information, and appointment history into one shared view.

Clinic screen with prescriptions, recovery progress, treatment information, and appointment history

Research

Stakeholder Map

Who are our primary and secondary target users?

We focused on adults aged 25–60 with experience of upper-limb rehabilitation at home. Occupational therapists, physical therapists, physicians, families, and caregivers helped frame the wider care system.

Stakeholder map connecting patients to family and caregivers, clinical providers, and technology providers

User / Expert Interview

Understanding patient pain points and needs

Across 8 user interviews and 4 expert interviews, we heard that patients needed more than instructions. They wanted to feel supported, understand their movements, and see evidence of progress.

Research documentation with interview questions, eight patient interviews, and four expert interviews
8 users4 experts

“Only around 20% of patients consistently follow their prescribed home exercise program, and many perform exercises incorrectly.”

Jared Todorowski · Physical therapist

Interview Key Insights

Data analysis of user pain points

Three recurring barriers shaped the product direction: unclear feedback from existing tools, physical uncertainty while practicing alone, and the emotional fatigue of repetitive recovery work.

75%

Design & Tech Gaps

  • Limited real-time feedback
  • Limited personalization
  • Poor continuity

100%

Psychological Barriers

  • Pain
  • Stiffness
  • Uncertainty

100%

Emotional Barriers

  • Repetitive
  • Depression
  • Anxiety

“It’s hard to describe how much force to apply… I was worried that my recovery didn’t have any progress.”

Eric · Patient interview

“You don’t have access to all the medical tools at home, so it can be hard to know whether you’re doing it right.”

Terry · Patient interview

Design Question

How might we make patients feel guided, encouraged, and connected throughout home rehabilitation?

Process

From a rehab movement to a cupcake.

Muscular Cupcake makes the relationship between effort and outcome tangible. A guided body movement becomes a familiar action: piping frosting. This became our working example for prototyping motion-based play.

“I wanted to go back to my everyday hobbies like baking.”
Timothy · Patient interview
Watch prototype video
Muscular Cupcake movement system: start with the arm raised, pull down to pipe, and push up for the next cupcake. Joint positions within the threshold produce correct frosting; positions outside it trigger corrective posture feedback.

Physical input

The proposed system uses a TrueDepth camera to capture movement. The prototype tests joint positions against a threshold to map movement to game actions.

A continuous feedback loop

Movement drives the mini-game. The service concept connects session reports to provider follow-up and the next exercise prescription.

Making the experience easier to follow.

From early flows to high-fidelity screens, ongoing testing guided the work toward readability, accessibility, and clearer interaction.

We explored how to make the daily starting point obvious, explain body movements before play, and carry useful feedback through to the report.

Design and prototyping tools: Figma, Adobe Creative Suite, generative AI, and vibe coding.

Design iteration board showing early wireframes, interface studies, user flows, and high-fidelity explorations
From flows and wireframes to a connected experience. View the full board ↗

Putting play into people’s hands.

At the Interactive Product Design Launch Exhibition, participants from different backgrounds tried the prototype. Many described the game-based experience as engaging and enjoyable.

Reeha prototype and presentation at the design exhibition
A participant raising their arms to interact with the rehabilitation game
A participant testing Reeha's movement-based interaction at the exhibition

The exhibition provided qualitative feedback on the prototype experience; it was not a clinical evaluation of recovery outcomes.

Small movements.
Meaningful moments.

Reeha explores how clinically informed movements, familiar activities, and immediate feedback can make home rehabilitation feel more approachable. The goal is to help patients feel confident practicing and connected to the people supporting their recovery.

Reeha's friendly exercise companion character holding a small dumbbell

Made with the support of many.

Thank you to our interview participants, clinical experts, and Carnegie Mellon University professors and peers for their time, feedback, and encouragement.

Technical advisor
Shemona Singh
Clinical experts
Anne Marie Sweeney, OT
Jared Todorowski, PT
Justin Berthold, DO
Lindsay Lehman, PT
Professors
Andrew Twigg
Stacie Rohrbach