We’ve discussed this a few times, but looking at some recent activities on Strava and Garmin, I’m reminded that we really can’t rely on these tools to tell us any more than How Far, How Fast.
On cycling Garmin constantly shows a higher number of calories burned than Strava
Cycling, 14.5 miles
Garmin = 595 calories
Strava = 405 calories
Running, 3.04 miles
Garmin = 369 calories
Strava = 480 calories
Both scores come from the feed on my Garmin watch.
So, which do I trust?
Forget about exercise calories, and focus on the input. I lose weight by eating less. I get fitter by moving more. I can move more, because I weigh less.