Effects of Physical Activity Adequacy Mindsets on Health and Wellbeing

After one week of baseline step count measurement, participants will receive the intervention. Starting day 8, participants' Apple Watches will start displaying their step count. In this arm, they will simply see their accurate step count.

After one week of baseline step count measurement, participants will receive the intervention. Starting day 8, participants' Apple Watches will start displaying their step count. In this arm, they will see their step count deflated by 40% (i.e., their step count multiplied by 0.6).

After one week of baseline step count measurement, participants will receive the intervention. Starting day 8, participants' Apple Watches will start displaying their step count. In this arm, they will see their step count inflated by 40% (i.e., their step count multiplied by 1.4).

"After one week of baseline step count measurement, participants will receive the intervention. Starting day 8, participants' Apple Watches will start displaying their step count. In this arm, they will simply see their accurate step count.~Additionally, participants in this arm will receive a meta-mindset intervention in the first weekly survey on day 7, which consists of a series of videos and reflection exercises to teach participants about the power of mindsets and encourage them to choose adaptive mindsets that will benefit their health. There are also short booster reflection exercises in all subsequent daily and weekly surveys, reinforcing the message about adaptive mindsets."