You don't have go to the gym or fill your home with wall-to-wall equipment to get in an effective workout [1], not when there are hundreds of simple, machine- and equipment-free routines just a click away on YouTube [2]. And you know what? You don't need a lot of time, either, and this roundup of 20-minute workouts is all the proof you need. Whether you want to see a physical change, get better sleep [3], or just burn off some stress, you're sure to work up a sweat with the best YouTube has to offer — no equipment required. Keep reading to find your new favorite workout!