Taylor Swift has just unveiled what might be the best advert of all time.

And we're not even exaggerating, because it actually involves the singer rapping, running and being a total hero.

Basically re-enacting all of that one time we went to the gym and tried to do this thing called exercise, Taylor can be seen popping her headphones in and hitting play on her fave Drake & Future song.

Obviously she can't help but sing along, hand gestures and everything.

But then comes the momentyou'll spit whatever your drinking out as she falls flat on her face and slides off the treadmill, NEVER STOPPING THE RAPPING.

Ob. Sessed.