January Commission: Gym Attribute Theft (Patreon)

Stacey's been a member of their gym for years. No one ever seems to actually see her work out, she mainly just struts around, preening over herself. Yet somehow, Stacey consistently puts on muscle mass like no one else in the gym. In fact, it feels like when Stacey does put on muscle mass, everyone in the gym seems to have a bad month...Guys aren't too sure what the connection is because they're too distracted by Stacey's lustful stare.