Ellie Goulding's love of all things fitness is well documented.

However we didn't realise that this involved her becoming a kickboxing badass to boot. 

The star posted a video to Twitter of her kickboxing routine and it shows that she really is not one to be messed with. 

We definitely wouldn't want to be on the receiving end of some of those kicks.

Of course, Goulding is hardly the first pop star to incorporate fighting techniques into their workout. Demi Lovato regularly posts footage from her MMA style workouts from Unbreakable Performance Centre in West Hollywood. As you can see from the video below, she could have an MMA career if the whole music thing doesn't last.