One year I tried to do NaNoWriMo (National Novel Writing Month; there's one going on right now since it's November) and found a chat room somewhere that would h

One year I tried to do NaNoWriMo (National Novel Writing Month; there's one going on right now since it's November) and found a chat room somewhere that would have a timer and then everyone would try to write as much as they could during a short time period, and we'd all report how many words we wrote. It was really good motivation, probably because of what you said: body doubling and time boxing, plus turning off the inner editor to write as many words as you could.