For the most secure fit, look for wireless earbuds with a hooked ear piece that will loop around the back of your ear. You’ll most commonly find this feature in sports models. Some general-purpose wireless earbuds offer a middle ground of “wings”—an additional piece of rubber attached to the bud that nestles against a ridge of your outer ear (the one nearest your ear canal). These won’t always work for extra intense movement, but they can help.