For those who have tested positive for (or are suspected to have) COVID-19 , there are a few things to do to stay healthy as the virus runs its course: plenty of rest, staying hydrated , monitoring your symptoms, and self-isolating from others.

But a U.K.-based doctor recently claimed that a breathing technique can also help fight off the infection.

Dr. Sarfaraz Munshi posted a video to WhatsApp claiming that his and a colleagues technique is beneficial to people who are self-isolating and have COVID-19 symptoms, and even to those who arent displaying symptoms.

While you have an active infection you need to be getting a good amount of air into the bases of your lungs , Munshi said in the video. The only way you are going to do that is by having a technique.

According to J.K. Rowling, who said in a tweet that she had COVID-19 symptoms, the doctors breathing exercise worked for her.

The Harry Potter author tweeted a link to Munshis video , and wrote: For last 2 weeks Ive had all symptoms of C19 (tho havent been tested) & did this on doc husbands advice. Im fully recovered & technique helped a lot.

But do medical professionals recommend using the breathing exercise?

We talked to two Canadian experts to find out. The short answer: Its complicated.

Watch the video above to learn more about the technique and whether you should use it if you have coronavirus symptoms.