Template:Multiple issuesCallan Pinckney (born as Barbara Biffinger Pfeiffer Pinckney September 26, 1939 – March 1, 2012) was an American fitness professional. She achieved unprecedented success with her Callanetics exercises. Her 9 books all became international best-sellers and the video series that followed went on to sell over 6 million copies. Pinckney's first video release "Callanetics: 10 Years Younger In 10 Hours" outsold every other fitness video in the US. Within 3 years it had pushed Jane Fonda into second place on the all-time individual best-selling fitness video chart and it remains the all-time fitness bestseller in both the US and UK.