Dina Asher Smith told Sky Sports that there is no end in sight for her athletics career and believes she can still get even faster as she approaches her 30s.
The Brit is competing in the 100m and 200m at the World Championships in Tokyo from Saturday and will be looking to add to three previous individual medals in this competition.
Asher-Smith won 200m gold and 100m silver in Doha in 2019 before taking bronze in the longer sprint in Eugene in 2022.
The 29-year-old enters this year's championships following promising runs of 10.94 in the 100m and 22.18 in the 200m on the same evening in Zurich last month, finishing fourth and second respectively.
"I still think I can run a lot faster and my body's fine, probably in the best place to be fine, so [how long I have left in the sport] is no