Belgium's Nafi Thiam was just 21 years old when she took Olympic gold in the heptathlon in 2016. She's since gone on to become world and European champion, dominating her sport.
To the concern of her rivals, Thiam says she's only now entering her peak. So can she go all the way at the delayed Tokyo 2020 Olympic Games? Can she becoem the first heptathlete to defend her Olympic crown since 1992?
From competing to win pots of jam to gold medals, this is her story, told in her words.