What a good group challenge needs
A start date, small teams and a finish line. Big open challenges lose people because nobody notices who stopped. Teams of two to four fix that, and a Friday finish gives everyone a reason to come back next Tuesday.
Mixed phones, mixed fitness
Members can be on iPhone or Android. Goals are personal, and teams rank on their average, so larger teams have no automatic advantage and every member’s day moves the average.
Running it, week to week
Make one kit with your link and QR code, share the announcement, and celebrate the Friday results. Then keep the same teams for the next round, or shuffle them.



