Nastia Liukin (nastialiukin)
Former world-class gymnast and gold Olympic medallist Liukin may have retired but she keeps winning on Snapchat.
Katrín Tanja Davíðsdóttir (Katrintanja)
2015’s Fittest Woman on Earth is on Snapchat.
Her fans can keep up to date with her training as she looks to defend her Cross Fit Games title in 2016.