High stress and long hours led these entrepreneurs to pack on the weight.
These entrepreneurs can't even fathom an 8-hour workday.
Forget employees. These businesses rely entirely on freelancers. That means no taxes, unemployment insurance or labor regulation.
Who says entrepreneurs have to start young? These owners waited until their 60s, 70s or even 80s to first launch a business.
The most dramatic changes mandated by the Affordable Care Act, aka "Obamacare," kick in by 2014. These companies are poised for big growth as they work with hospitals, insurance providers and others scrambling to hit deadlines.