Table 1.

Forum prompt questions.

Forum title	Discussion guide	Logic of enquiry
Catalysts for change	Have you changed anything recently to make you happier? Healthier? What triggered that change? How did you go about making that change? Did it change the dynamic within your friendship circle? Have you kept up with that change? (for how long – or probe for that?) What (if anything) was pulling you back to your old ways? Did social media give you any inspiration? Help? Hinder? Did anything else or any other tools play a role too (eg, apps, websites or even just people...)?	An exploration of what prompted lasting health behavior change in the young adult participants and whether social media played a role in this process.
Persuasion on social media	Can you think of times when you have used social media to persuade others to do something? Can you think of times when you have been persuaded? More broadly, can you think of how social media has influenced things you do in relation to health and healthy lifestyle?	To determine whether the participants viewed social media as a persuasive medium and to understand some of the factors that influenced its persuasiveness.