David Blaine's Greatest Hits

May 2006, New York
Floats 7 days in a water-filled sphere followed by an attempt at the breath-holding world record.
Physical Toll: Rescued from water after convulsing and losing consciousness.
Difficulty: 5
"I was submerged in the water longer than anyone ever had without taking a break — seven and a half days. I didn't make it through holding my breath. That's why I had to return to it."

• How David Blaine Held His Breath
• Q & A: David Blaine