Apple

yesterday, my watch told me i burnt 2,000 calories. which is very weird as i hadn’t done overly much that day. i walked for probably a total of an hour, spent 45 minutes on an exercise bike and had a half hour swim. this tends to be what i usually do, and my watch usually clocks (haha) it at ~1200 calories. even then i subtract about 25% of what it tells me i’ve burnt, as it always seems a bit too much. this is the biggest anomaly i’ve seen from my watch amongst other things like massively overestimating my burnt calories whilst cycling.

is this something that is common? and is there anything i can do to get a more realistic estimate of burnt calories?

many thanks!