How can one run multiple businesses without affecting his or her health adversely?

[King Belieal]

There are many people that run multiple businesses at a time. But that level of work always tends to affect the health of a person that is running such multiple businesses. How can one run multiple businesses and it doesn't affect the health of the person?

 

[eLdavis]

I think it would be best to focus on one and grow it to a stage where it can stand on it's own before you start another one.