If you know anything about human anatomy then you are probably aware that muscles need to be given time to rest and recover. This is why it is not recommended to work the same muscle group over and over again on a regular basis. So, your abdomen is going to be no different. Now, what is interesting about this is there are experts out there who believe that the abdominal region can be trained every day. However, opinions are like noses and everyone has one. So, you will also have those individuals who will advise against this. Truth be told, if you focus on this area three to five times a week then you should be in good shape.