An Australian personal trainer claims to have discovered a technique that has transformed the quality of his skin, health, and hydration levels. Brandon Hasick from Sydney discovered the trick, which is quite easy to perform, through lots of trial and error. Now, however, Hasick swears that by changing the way he breaths, especially at night, he has been able to get the health results that he has sought for years.

Hasick claims to be a sports scientist and personal trainer. He never thought much about the way he breathed until he attended a health retreat and learned that he was classified as a “mouth breather.” During the retreat and through subsequent research afterward, Hasick learned that mouth breathing could be detrimental to a person’s overall health. According to the Australian personal trainer, mouth breathing can lead to dehydration as well as an overall tired feeling. Mouth breathing can also contribute and affect someone’s skin, making it dry. It can also cause a runny nose, according to Hasick.

In one Instagram post that has since gone viral, Brandon Hasick shares a picture of himself with a piece of tape covering his mouth. He then explains why he does it and how he decided to do it after learning that he was a mouth breather.

He writes, “I’m a mouth breather or was. Until I went on the @wilbagee retreat, I never paid much attention to the way I breathed. I have done wim hof and other conscious breathing techniques but have never really paid attention to the other 23 hours and 45 minutes of my day.

“Turns out, I breathe through my mouth—a lot. Which explains why I always feel dehydrated, had dry skin and a runny nose. (The retreat leader) got me to tape my mouth one night before bed to see how I went. After panicking for about 90 seconds and thinking I wouldn’t wake up alive, it turns out, I had an epic sleep and woke up without having to skull a liter of water.”

But that was not the only benefit Hasick noticed after a night’s sleep with his mouth taped shut. He also could breathe better!

“And my nose was clear. Since then, I’ve been taping my mouth each night, sleeping great, and my skin feels so much more moisturized. I’m sure it will take a while to unconsciously breathe through my nose 24/7, given that I’ve been in this motor pattern for so many years. However, during sleep is a solid 8 hours/day in the right direction.”

Healthline backs up Hasick’s assertion that nose breathing is healthier for the human body than mouth breathing. Breathing through your nose actually helps the body more efficiently use the oxygen that gets inhaled.

Your nose also filters out foreign particles that might enter your body while you breathe. The mouth, on the other hand, allows everything into your body. Breathing through your nose also helps humidify the inhaled air and can help improve oxygen circulation in your body because the process of nose breathing produces nitric oxide.

Will you try taping your mouth shut at night to do more nose breathing?