"Here’s how the folks at Xen describe 'em: This fresh take on everyday earbuds uses patented neuroscience, proprietary software and first-of-its-kind waveform stimulation that synchronizes with music or ambient noise to stimulate the vagus nerve. Touching nearly every vital organ in the body, the vagus nerve can be toned to promote immense wellness benefits like reduced stress, improved sleep, enhanced memory, boosted focus and more, using Xen by Neuvana."