Blaine's latest stunt in NYC _ hanging upside-down

What's David Blaine up to? Oh, just hanging around. The magician-daredevil proclaimed, "I'm doin' all right," after starting his latest endurance challenge Monday - 60 hours hanging upside-down, without a net, above Wollman Rink in Manhattan's Central Park.

Blaine - sounding nasal from sinus pressure - kept smiling while describing the "enormous push of blood" that made it feel like his head was "about to explode."

As a child, he was intrigued when Harry Houdini dangled from a crane by his ankles while escaping a straitjacket.

Said Blaine: "The legs go pin and needle very fast." Stretches - kind of an upside-down sit-up - seem to help.

Blaine, 35, is scheduled to exit from his perch at the climax of a live, two-hour ABC special, "David Blaine: Dive of Death," on Wednesday.