I completely forgot about this, but one or two days before the Charlotte show Mick did an interview and he was asked about how much he runs on stage, and the reporter told him some number he read somewhere, like 11 miles or something, and they chatted about it for a little bit. In the end the reporter asked if Mick ever tracked the miles per concert again and he said something like he didn't do it in a long while.
Now check out some of the pictures of the Charlotte show, you can clearly see him wearing a smart watch on his left wrist for the only time this tour. I thought it's funny he actually was curious about it himself: [iorr.org
Now the same reporter asked him later why he never bothered playing Let It Loose and Mick didn't have an answer. Here's hope he might remember this for the next tour too.