Up early? You’re a rare bird
Researchers suspect about 1 in 300 people classify as extreme early birds—in bed by about 8 p.m., up by 4 a.m.
Health problems that affect breathing or sleep can lead to fatigue and lethargy that disrupt your daily routine. Understand your lungs and respiratory system—and what you can do to help yourself.
David Stults developed popcorn lung after exposure to dangerous food chemicals. He's now hitting the school circuit to teach students the dangers of vaping similar substances.