Hayata Dair

America's homeless doctor brings health care to streets

Pittsburgh (CNN) Dr. Jim Withers used to dress like a homeless person. On purpose. Two to three nights a week, he rubbe…

Hayata Dair

Why Do We Sleep, Anyway?

At a Glance Our bodies regulate sleep in much the same way that they regulate eating, drinking, and breathing. This sug…

USMLE

USMLE Preparation Tactics

As most medical students know, the U.S. Medical Licensing Examination Step 1 — or “The Boards,” as the exam is commonly…