Freewriting
Freewriting is writing continuously for a fixed stretch without stopping to correct, judge or delete, used to break a stall and find material the planning mind would have refused.
The rules are the whole method: pick a length, start, and do not stop moving until it ends. No rereading, no fixing, no deciding whether it is any good. Eight minutes is a common unit, short enough that the session starts before the resistance does.
What it produces is not a draft. It is raw material, and the useful fraction is usually a line or two — which is the correct return, because the alternative was a blank page.
Two variants are worth knowing because they work on different stalls. If you do not know what happens next, write the list of things that will not happen: the absurd turns, the ones you would never use. The real next move tends to surface halfway down the list, and Pixar's writers teach the same trick. If you cannot start at all, end the previous day's session mid-thought — write the first few sentences of tomorrow's scene tonight — so there is no blank page waiting in the morning.
Freewriting belongs in drafting only. Nothing it produces should reach a reader before it has been through the same line edit as everything else.