After a concert in Denver, Cardi B used an oxygen mask after feeling breathless due to the city’s high altitude. Denver’s thinner air contains less oxygen, which can trigger altitude sickness, causing ...

The performance-enhancing altitude mask that Olympic hopeful Sivert Guttorm Bakken was wearing when he was found dead this week “is not part of the Norwegian Biathlon Association’s organized training ...

Videos of Cardi B using an oxygen mask during her concert in Denver caught fans' attention. The rapper later addressed the moment with humour, while experts noted that high altitude can cause ...

Keenan Lewis isn't willing to be the player in 2015 who gets beat during an opponent's two-minute drill. According to Joel A. Erickson of The New Orleans Advocate, Lewis has taken to wearing a ...

Rapper Cardi B used an oxygen mask shortly after wrapping up her performance in Denver, which sits more than 5,000 ft above sea level.