S Health on Gear S3 calorie counter is being strange

[Ediblebricks]

So I've been doing exercises with my Gear S3 tracking my time, calories, heart rate, etc. For several weeks now, one hour and ten minutes on a stationary bycicle has burned 800 calories approximately. Last night, December 1, there was an update for my gear S3. Now, an hour and ten minutes on a stationary bycicle only claims to burn 500 calories. This is a huge discrepancy, does anybody know why that might be? I don't know if it has to do with the update or not. Which is it? I'm an 18/YO male 6'5/198 pounds, I know the profile (age, weight, etc) has a lot to do with it so maybe it's got my profile confused for somebody older?