Even after all the calf flexing Gretchen did in the hour and a half of filming up to this point, she still had enough oomph in her calves to do another 50 in the strappy heels, which you shall see herein, first at regular speed and then repeated at half speed so you can contemplate all the amazing muscle movement at your leisure. She counts the reps out for you in her sweet voice, too, so you can have dual sensory input as you bring yourself to finish. It is nice when someone makes a clip just for the purposes of enabling your happiness, do not you agree?