Six ways your smartwatch is lying to you, according to science

You check your smartwatch after a run. Your fitness score has dropped. You’ve burnt hardly any calories. Your recovery score is really low. It’s telling you to take the next 72 hours off exercise.

The worst bit? The whole run felt amazing.

So why’s your watch telling you the opposite?

Ultimately, it’s because smartwatches and other fitness trackers aren’t always accurate.