Whether you’re paying attention or not, that pre-flight safety demonstration is there for a reason. Everyone is familiar with this must-do part of your flight, and hopefully, most of us have absorbed ...

Contrary to viral claims, wearing surgical masks or cloth face coverings does not restrict the amount of oxygen a person breathes in, nor does it cause a dangerous buildup of carbon dioxide, according ...

You may have noticed an increasing amount of professional athletes using odd masks when they’re working out or warming up — most notably former Seattle Seahawks running back Marshawn Lynch. Those ...

You should know the safety spiel well by now – “In the event of emergency, put your oxygen mask on first.” But have you ever wondered why the cabin crew is so careful to hammer this information into ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. The mask is a tiny, ...