Last month Apple encouraged Apple Watch owners in the U.S. to get out on Thanksgiving in exchange for an activity achievement and iMessage sticker. This morning Apple notified Watch users that a second activity challenge will be taking place at the start of the new year.
This new activity challenge, unlike its Thanksgiving counterpart, will take place worldwide, and completing it will take longer than just a single day. From the Activity app:
Earn this special achievement when you close all three Activity rings each day for any full week, Monday through Sunday, in January. You'll also earn special stickers in the Messages app.
Since the challenge keeps track of your Activity progress from Monday to Sunday, the official start of the challenge will be January 2nd, and the earliest it's possible to earn the achievement will be the 8th. But if you're unable to complete all three rings each day of that first week, you'll have three more chances: the weeks of January 9th, 16th, and 23rd.
Personally, I appreciate Apple's efforts to encourage greater health and fitness in life. watchOS 3's addition of activity sharing fostered healthy competition between my wife and I, and last month's Thanksgiving challenge led us both to get out and complete a 5K on the holiday, which we otherwise wouldn't have done. We're both already eager to score this new achievement trophy together.