PERSON: Jennifer Sey

XX-XY Athletics

CEO & Founder

Jennifer Anne Sey (born 1969) is an American author, business executive, and retired artistic gymnast. She was a seven-time member of the United States women’s national artistic gymnastics team and was the 1986 U.S. Women’s All-Around National Champion. She was also a member of the 1985 U.S. Women’s World Championship team that finished 6th, as well as the U.S. Women’s Team at the 1986 Goodwill Games. Following her gymnastics career, Sey entered the business world, and is presently the founder and CEO of XX-XY Athletics. She developed a social media following due to her critical views on school closings during the Covid-19 pandemic.

Sey grew up in Cherry Hill, New Jersey and moved to Haddonfield, New Jersey, where she competed in gymnastics as a teenager and attended Haddonfield Memorial High School. In 1983 she moved to Allentown, Pennsylvania to train at the Parkettes National Gymnastics Training Center. She graduated from Allentown Central Catholic High School in 1987. In the 1985 World Artistic Gymnastics Championships, Sey was hospitalized after fracturing her right femur. Sey then won the 1986 USA Gymnastics National Championships and deferred her college education to train for the 1988 Olympics. However, she decided not to enter the Olympic Trials owing to an injured left ankle which made it “physically impossible” to continue. After that disappointment, Sey lost her appetite for a while.

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