PORTLAND, Ore. — KGW wanted to address several claims going around stating that wearing a mask lowers your oxygen levels. Viewer Linda W. emailed, asking, “I keep hearing that a person’s O2 stats ...

This claim has been repeated and debated by professionals for the past three months. Air-quality monitors take 10 seconds on average to adjust to the air quality in an environment, so they are not ...

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, ...