Eddie Redmayne worked with a dance teacher on 'The Theory of Everything'.

The 32-year-old actor - who recently won a Golden Globe for his portrayal of Stephen Hawking in the biographical film - has revealed that his dance instructor would help him scrutinise and perfect the physicality.

He said: ''I worked with a dancer as well, an amazing woman called Alex Reynolds. My instinct was to try to learn the different stages of the physicality like a dance. Like learning steps, you never have a hold of it - I'm a s**t dancer by the way - but once you know the steps, you can then play.

''So we went to these ALS [amyotrophic lateral sclerosis] clinics in London to become educated in the specifics of the disease. Then I'd go to a studio and Alex would film me walking with a dropped foot or something, and we would go and scrutinise it. It's one of the things that you can't see on your own.''

Eddie also had to drop some weight for the film, but revealed that a lot of his apparent weight loss came down to clever costume and make up tricks.

Speaking to Jennifer Lawrence for Interview magazine, he shared: ''I lost, like, 15 pounds at the beginning of the film. With the disease, Stephen did lose a lot of weight. But we couldn't shoot chronologically, so we were having to jump between different time periods within the same day.

''Our extraordinary makeup artist, Jan [Sewell], and costume designer, Steven [Noble], did clever things like making the collars tight and my makeup look healthy in the morning, and then, if in the afternoon I was playing him older, they would mess with proportions - the collars would become bigger or they would use slightly oversized wheelchairs.''