The 63-year-old rock musician, who is currently on the European leg of his tour, wants to have oxygen available backstage at all of his shows in case he has difficulty breathing, reports FemaleFirst.
During a concert in Norway last Friday (May 23), Stewart told organisers to have two oxygen kits with masks on hand.
A source said, "The oxygen kits had everyone talking. It wasn’t the sort of thing that you’d expect but he is such a star that anything goes and we were more than happy to oblige."