The last thing you want at the gym is someone telling you that you're running so slow that you may as well give up.
So what do you do when the treadmill starts abusing you?
YouTuber Stuart Edge attached a bluetooth speaker to one piece of equipment and used it to harass the unlucky gym bunnies.
Highlights include "I bet your girlfriend broke up with you because you're so slow" and "if only you ran as much as you talk".
One runner takes so much abuse that he can't handle it anymore, and decides to move to another machine. This displeases the sentient treadmill overlord. Another gym-goer gets so distressed by the harassment that he locates the speaker and rips it off.