How do actors cry in movies?

Any good actor is able to cry on demand. It's a talent that has to be cultivated and practiced, but...

Actors think of sad things to help them cry on cue. They also use drops to make themselves cry on cue...

From what I've read, most just think of something really sad that has happened in their life. They can...

They don't blink for a few minutes, put something hot near their eyes that creates tears, or think about...

Some actors are very emotional and can almost cry at will. They also use eye drops when its time to...

Some actors can cry on cue, some are coached into crying, and others think of awful things to make themselves...

Build up of emotions for the part they paying. One actor told me once they think of something that has...

Well, I work myself up before the scene or w/e and then I either cry or I don't...you know :P It won...

well, some use onions lol some think of someting really sad some really get into their character and...