it is hard, so i always try to keep switching my food up.
beef and rice one week, chicken and whole wheat pasta another....etc....
check out a supp called black hole, i know a few guys in my gym that have used it and had sucess with it.
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Black Hole by Controlled Labs
Fast Absorption/Fast Acting
Eat More Than Ever Before
Helps Indirectly Add Lean Mass
Legal, Safe, and Effective for Both Men and Women
Stimulate Metabolism to Reduce Body Fat
Natrual Digestive Aids for Increased Calories
Also Acts as a Natrual Joint Supplement