Hello everybody,
I think the current challenges for users of Garmin Connect are quite boring. There is only a list with some participants, a ranking, a winner after seven days and an information via e-mail. The design of the weekly challenge is very spartan and after some months the time of getting badges is over. I don't have fun to take part in these challenges. The fitness trackers are often quite good, but please redesign the challenges by Garmin Connect.
Please, have a look at the challenges of the community by Samsung Health. They have an excellent and animated design, are monthly, some tiny rewards are given here and then and it's really fun to be a part of these challenges with always more than 1 million members per month and all over the globe. The challenges have fanciful names like "Desert Challenge" for April 2018 or "Lavender Challenge" for May 2018.
Regards ... Gregor