The gym's sterile lights cast harsh shadows on the woman's ample, jiggling ass as she hops onto the treadmill. She sets the pace, her massive cheeks bouncing and swaying with each stride. Her sweat-soaked leggings cling to her pussy lips, outlining her wet slit as she increases the speed, chasing her own climax. Her breath hitches, her moans echoing through the empty gym, as she nears her peak.