If you’re in a funk and your writing is stuck, take a break and move. Time away and increasing your heart rate will help reinvigorate your writing.
Steve Jobs held walking meetings; Mark Zuckerburg at Facebook does, too. Henry Thoreau, author of Walden, claimed his thoughts—and writing— began to flow “the moment my legs began to move.”
Whether you stay inside or head out of doors, the key is to move.