In a matter of minutes, Pamela Kays, 56, went from working as a neonatal intensive care unit nurse to being rushed to the emergency department for a heart attack. “I kept looking at the clock and ...

As I write this, I'm sitting in an abnormally cold room, wearing a fleece-and-cashmere blend sweater. I'm also sweating profusely. My friends and co-workers complain about being sweaty like it's an ...