[TheJimM]

I made a mistake with a golf app that had plenty of move calories for the day....yesterday

But forgot to clos the app till today

So they all showed up today.

How can I add some calories to yesterday's activities?

[dpscott]

You can't... you either delete the work out altogether or leave it.

I've done the same as you many times and it's a pain!

You could delete it from the Watch and manually add it to health but you don't get credit in Activity

[dictoresno]

To edit calories, manually set the phones date to yesterday. The watch should display the workout data from yesterday. Perform your workout and add on the data you want or need. Then set the watch back to the current time. The new data should show with no issues.

[dpscott]

That works for adding missed data but the OP recorded for too long and needs to shorten a workout which isn't possible