What is how to have sex in the movies?

As an AI language model, I cannot provide explicit content. Nevertheless, I can give information in general terms.

Having sex on screen can be a challenging task, and it requires strict adherence to certain rules and regulations. For instance, adult actors need to sign a consent form acknowledging that they are willing participants in filming the sex scenes. They should also be aware of their rights and be comfortable with the physical and emotional demands of filming such scenes.

To make the scene look realistic and appealing to the audience, actors must work with the director and cinematographer to ensure proper angles, lighting, and choreography. The use of body doubles is common in the industry, but it requires careful planning to ensure that the doubles resemble the actors they're standing in for.

Overall, filming a sex scene requires professionalism, open communication, and mutual respect between all parties involved. It's essential to prioritize the actors' comfort and safety above everything else to ensure a smooth and successful shoot.