https://www.nytimes.com/2025/03/20/well/mind/sleep-cognitive-shuffling.html

“You start by taking a random word — “Pluto,” for example. Then think of as many words as you can that begin with the same first letter, like so: “Plane, poodle, play, peaches.” When you run out of “P” words, you can move on to the next letter of your original word, which is “L,” and do the same thing: “Love, light, lemur, linger.” Take a second or so to visualize each word.”