
18. John Cusack
The endearing John Cusack is one of those actors who tends to fly under the radar, publicity-wise. And so you may be surprised to learn that he’s actually pretty badass, with a level six black belt in the martial art of ukidokan kickboxing. In fact, he’s been involved with the practice for nearly three decades and can often be found on Twitter gushing about his love for the sport.

17. Jennifer Aniston
Ever wondered how Jennifer Aniston has maintained her enviable physique for so long? Well, it could be down to Budokon – a mixed-movement practice that the Friends performer has credited for her upper body strength. Plus, she’s even introduced her husband Justin Theroux to the yoga-esque exercises.

16. Forest Whitaker
Despite playing the vicious warlord Idi Amin in The Last King of Scotland, there’s something genuinely likable about Forest Whitaker. However, you might not want to get on the wrong side of him, especially given his high-kicking skills in Kenpo karate. And Whitaker has reached the level of 1st Dan, proving that he’s more than proficient in the intensive discipline.