Consumption frequency
Twice a week, randomly from Tuesday to Saturday, the participants were asked after the first block to report on their soda consumption from the previous day within the intervention software. If a participant did not play the randomly chosen day, the consumption report was asked the following day. They answered the question ‘How much soda did you drink yesterday?’ by indicating how many glasses, cans, small and/or large bottles they drank with the help of pictures (Fig. Screenshot of the consumption frequency questionnaire. The following questions were asked: “How many sugary beverages did you drink yesterday”/“soda, sport drink, juice made from concentrate, energy drink, ice tea, and iced coffee”.