Agree on the goal
A participant may want to explore interaction, try movement at home or create an active break. Choose a specific, comfortable goal without promising a body transformation.
Discuss the camera
Explain when the camera starts, how the app describes data handling and how permission can be removed. Do not share a participant's images or results without appropriate agreement.
Age is not a fitness level
People of the same age can have different abilities and needs. Ages 13–18 is a product content grouping, not a universal training prescription or body standard.