If you have allergies, asthma, or chronic sinusitis, this will be an absolute game-changer for you. If you have sleep apnea or insomnia—it’s a must-try. And the beautiful part? It’s free, it’s easy, and breathing is something you have to do anyway. Of all the health-boosting practices we recommend, breathing through your nose is by far the most accessible—no external barriers to be found.