TIME Magazine December 20, 2004 Vol. 164 No. 25

• COVER: Why We Sleep - You may think it's for your body, but it's really for your brain. The latest research is full of surprises
• SCIENCE: Adventures in the Sleep Lab - How was I to know I was suffering from sleep apnea? I was unconscious
• NATION: The Arnold Show - Most Californians love their Gubernator. But can he fix the state's problems by being a one-man band?
• WORLD: How Safe Are Our Troops? - Why the Pentagon ended up with a shortage of armored vehicles for U.S. soldiers in Iraq