Add Yahoo as a preferred source to see more of our stories on Google. Katie Donnell, 28, was a "workout queen" who died of a shocking heart attack -- her mother believes it was a caffeine overdose and ...

Her mother, Lori Barranon, called the drinks "harmful and deadly" and blamed them, along with caffeine supplements, for her daughter's death A 28-year-old “workout queen” who fueled her gym visits ...