Injection question

Suppose I inject 4+4 cc´s in each one of my gorgeus glutes. Is it safe to inject the next day in the same bodypart but shifting injection site by say an inch ?

I´ve been told 2 per week tops in the same bodypart but no one has explained why.

I will be using test. prop (swithing from test.ent) soon and the stuff is 50 mg per ml…