Florence Joyner was born December 21, 1959. she was a famous women's track star and she was known for how fast she was and how long her nails were, she set the world record for 100 meter and 200 meter. Florence started running when she was 7 chasing jackrabbits to increase her speed.

In 1980 she entered the University of California, she won a silver medal in the 200-meter race and quickly became a media celebrity with her 6-inch (15-cm) decorated fingernails and eye-catching racing suits. Disappointed with her performance, however, she went into semiretirement.

After the 1988 Olympics, Joyner retired from competition. Suspicions soon arose regarding how the so-called "world's fastest woman" achieved her victories. Joyner and her coach, Bob Kersee, came under media speculation when another athlete suggested that Joyner had used performance-enhancing drugs. Some attributed the substantial improvements Joyner made in her performance levels from 1984 to 1988 to illegal substances. Others thought that her incredibly muscular physique had to have been created with the help of performance-enhancing drugs.

Joyner remained involved in athletics in retirement. Joyner died unexpectedly of an epileptic seizure on September 21, 1998, at her home in Mission Viejo, California. She was only 38 years old at time and was survived by her husband and their daughter, Mary Joyner. Remarkably, more than 30 years later, Joyner still holds the world records in the 100- and 200-meter events, with times of 10.49 seconds and 21.34 seconds, respectively.

Jackie Joyner-Kersee (was born March 3, 1962, East St. Louis, Illinois, U.S.) American athlete who was considered by many to be the greatest female athlete ever. She was the first participant to score more than 7,000 points in the heptathlon.

In high school she was a determined student and athlete, graduating near the top of her class and competing on the school’s volleyball, basketball, and track teams. As a junior, she set the Illinois high-school girls’ long jump record at 6.68 metres (20 feet 7.5 inches). Her high-school success led to a scholarship to the University of California, Los Angeles (UCLA), where she initially focused on basketball and the long jump.

Joyner-Kersee was involved in various philanthropic organizations. In 1988 she established the Jackie Joyner-Kersee Foundation, which sought to help at-risk children, especially those living in her hometown of East St. Louis, Illinois. She later cofounded (2007) Athletes for Hope, which encouraged professional athletes to become active in charitable causes. In 2016 she became involved in an initiative backed by Comcast to provide Internet access to low-income families, among other aims. Joyner-Kersee’s memoir,