OK folks, here we go.  Let's discuss the theory behind muscle growth. 

First of all, you MUST understand that muscles grow on rest.  Yes, that's right, MUSCLES GROW ON REST!  Now, before you go off and think that if you just lay around doing nothing, your muscles will grow, let me give you the rest of this statement that most experts take for granted.

Muscles grow on rest AFTER theyhave been worked.  Get it?  You have to work out, then give that particular muscle group a rest so they can recover and grow.  Another way to say this is you break the muscle down in order to make it grow bigger and get stronger. 

Now that we got that straight, the question comes up, "how long should we let them rest?"

The answer to this question varies depending on who you talk to.  Some people say work a particular muscle group once a week, others say every 3 to 4 days.  Most are in agreement that at least 2-3 days minimum are what's required to rest a muscle properly.

One thing that every expert is in agreement with is to NOT work a muscle group two days in a row.  ALWAYS have rest in between workouts.  Keep in mind, you can work out every day, but work out different muscle groups.  In other words, alternate what body parts you do and do not work out.  Get it?

Have you checked out "The Interview Series: Fitness Edition" yet?  Click the link and find out.