In all seriousness, they're showing the hallmarks of athletes cycling down from PEDs. They're not doing anything different but the intensity has gone.
I'm convinced they were on endurance boosting drugs but have come off following the title win due to increased scrutiny.
Not arsed if people think I'm mad, but I saw too many instances of the impossible happening late in games last season for it to be a coincidence. They were running in the 90th minute like the first.