"Am I eating enough?"
Maybe not. I can't tell you without knowing your LBM. My suggestion would be to recheck your protein and block requirements. Use the Very Active activity level and compare to the Active level. Eat either the amount suggested for Very Active or an amount between the suggestions for Active and Very Active. Additional monounsaturated fat will also be helpful to meet you energy needs, if you are still having a problem once you're eating at an appropriate block amount (start by doubling the number of fat blocks you add to meals). You will also find the following video presentations to be to very helpful (they apply to average people in the Zone, as well as to elite athletes): http://www.zonediet.com/EliteAthlet...fault.aspx