Product design question

Design a product that helps people become healthier.

Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.

What this question tests

Tests broad health-and-wellness ideation with the discipline to narrow to one segment and one behavior change mechanism.

Narrow the vague prompt: pick one specific behavior, like consistent daily movement, rather than a catch-all health app.
Segment on people who know they should exercise but struggle with consistency, not people who are already highly active.
Identify the pain point: motivation fades after the first few weeks without social accountability or visible progress.
Design small-group accountability circles, friends or coworkers sharing a simple daily activity streak, with light social nudges, not shame-based ones.
Define success as streak retention at 30 and 90 days, and group-level adherence compared to solo users.

Narrows an intentionally broad prompt to one specific behavior and mechanism instead of listing generic wellness features.
Grounds the design in a known behavior-change principle, social accountability, rather than pure self-tracking.
Picks longer-horizon retention, 30 and 90 days, as the real test of habit formation, not just day-one signups.

Proposing a generic all-in-one health tracker without picking one specific behavior to target.
Measuring only short-term engagement instead of habit retention over a longer window.

How would you avoid social accountability turning into shame or unhealthy comparison?
How would you monetize this without adding friction to the habit loop?