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No problems (since Watch and iPhone were rebooted at the end of October, when time was changed from summer to winter).
 
Just opened the health app and had a browse around and now activity has stopped crashing. Weird. Didn’t change anything.
 
Mine crashes when I choose the first of November as well. I just rebooted the iPhone 6s and the Watc,h we will see if it fixes it...

NOPE!
 
Mine crashes on Nov 19 only. Clearing the health app data for this day does not change the activity app. Is there anyway to remove data from the activity app for a specific day?
 
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