April 19th 2017
By Mike Flaminio
Via Mac Rumors:
Get outside and celebrate Earth Day on April 22 and earn this award. Go for a walk, run, cycle, wheelchair, or swim workout of 30 minutes or more in the Workout app or in any third party app that writes these workouts to Health. You will also earn special stickers for Messages.
Apple has done similar special challenges for Thanksgiving and a new year challenge this past January. I've done each of these so far and they're a fun activity that's not very difficult to obtain. I'm sure we'll make time to walk to the park or something this weekend.