It’s Breathe Week - a whole week of episodes about one of the most important things our bodies do to keep us alive and healthy. Every time you take a breath, you’re inhaling oxygen and breathing out carbon dioxide. But how does that work?  We asked pediatrician Stephanie Lovinsky-Desir to help us find the answer.

Got a question that’s a real gas? Send it to us at BrainsOn.org/contact, and we’ll help get it answered – we’re not blowing hot air!