Some 'superheroes' seem able to exist on very little sleep -- are they fooling themselves?

Does it only take five hours of sleep to fuel the juggle? We recently posted about one woman who rises at 5 a.m. and often ends her day at midnight. She needs all that time to squeeze in a day of work and

caring for her family.

It's a familiar timeline for many of us. Can't fit everything into your day? Just make the day longer!

Some superheroes seem to survive this way indefinitely. An ad-agency founder profiled in the latest issue of Inc., Jordan Zimmerman, rises at 3:30 a.m., works out before work, takes three of his four kids to