The actor - who uses she/they pronouns - played Princess Diana in the Netflix series and stars as Lady Chatterley in an upcoming film adaptation of DH Lawrence's steamy Lady Chatterley's Lover.
They and co-star Jack O'Connell worked with an intimacy coach - which has become more common in the industry since the #MeToo movement - while making the film, reported the Daily Mail.
Opening up on Zoe Ball's radio show, Corrin apparently said it was "something that the industry has really woken up to".
"I always compare it to like, you wouldn't do a fight sequence or a stunt sequence without a stunt coordinator, and you shouldn't do intimacy scenes without an intimacy coordinator," they said.
During a recent appearance on The Graham Norton Show, Corrin was asked why they wanted the role, and replied: "When I got the script Laure (de Clermont-Tonnerre) our director was already attached and she is incredible, and there was a crazy scene where they both dance naked in the rain.
"For some reason I was like, ‘Yes, sign me up!'"
“I think certainly that it was the most exhilarating thing I have ever done in my life," they went on.
"In filmmaking it is pretend so it’s rare that you are actually in a situation where you are literally thinking and feeling exactly as your character would be.
"Being completely naked in the Welsh countryside meant you didn’t have to fake anything, you were just feeling it and it was quite amazing.”
The 26-year-old said their family had watched the film and joked that they all "coped".
Watch: Jack O'Connell on dancing naked in the rain with Emma Corrin