14 Most Savage Celebrity Martial Artists

While we might get little bits and pieces of a celebrity's progression through their martial arts journey, it's very rare that an audience get an in-depth look at what it takes to do a training camp. However, we got to see just that in Idris Elba's documentary, Fighter, following him on his year-long journey towards his Thai boxing debut.

Luckily for the 'Luther' star, he's got the luxury of being able to train all over the world and work with the best coaches out there, but it's still an exceptional task to go from a semi-fit actor to ripped and shredded Muay Thai wrecking machine in just 12 months.

It's actually quite funny to see him in his first sparring session and the realization that spreads across his face that this is going to be a hell of a challenge. However, it's safe to say that after a year, Idris's striking certainly packs a punch, an elbow and definitely a knee too.