Active recall is a learning method where you continuously test yourself by pulling information out of your memory instead of just passively reading notes; it strengthens memory and helps move information into your long-term memory, making it one of the best methods for revision and studying. 

Active recall works by making your brain search for information rather than passively letting it wash over you. Doing this strengthens the neural connections to memories, making it easier to find the information again later. Kind of like learning the route to a new place; you might have to look up directions many times at first, but after repetition, remembering the way becomes effortless. Although testing yourself is harder than reading a book, challenging your brain to do this workout makes connections stronger and will benefit you in the long run.