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, ...

We’ve all heard the warning: “In case there is a loss in cabin pressure, yellow oxygen masks will deploy from the ceiling compartment located above you ... Please make sure to secure your own mask ...