Dana is wearing sexy super short jean shorts and running shoes. She walks up a long set of stairs with her vascular calf muscles popping with every step. The camera follows her from the back and both sides as she walks up and down the stairs. Most of the footage is of her walking up because that's when the muscles are twitching and popping like crazy. She stops half way up and reps both calves together. She also puts one foot on a higher step and does heels lifts showing off her thick inner heads. As the camera zooms in she does very sweet muscle control. Making her calf muscle contract with a... Show more