If you’ve every heard of (or worst, experienced) swimmer’s ear as a runner, it’s pretty gross. However, it can happen if those sweat beads slip behind your ear buds into your ear. Inside-the-ear headphones can also be dangerous and hinder your ability to hear and notice your surroundings.
One solution is “bone conduction headphones,” which sounds kind of odd. One company, Aftershokz, has created a set of headphones, Trekz Titanium, that rest comfortably on your cheekbone right in front of the ear. The idea? Your tunes send vibrations directly to your cochlea, the part of the inner ear that lets you jam out to whatever you’re listening to. Have a look at this video: