Cheese / other dairy doesn't seem to do it for me, and I rarely remember dreams good or bad. The most reliable way I've found to induce nightmares is to overhea

Cheese / other dairy doesn't seem to do it for me, and I rarely remember dreams good or bad. The most reliable way I've found to induce nightmares is to overheat while sleeping (e.g. falling asleep clothed and under a blanket). To be clear I am not recommending doing this, as the nightmares tend to have a vivid quality similar to a fever dream and are remarkably unpleasant.