| They All Do It, Im Just Honest: Frank Grillo Says Most Hollywood Physiques Involve Steroids, And Reveals Exactly How He Trains, Eats, And Stays Ripped At 60 **A quick tour of how your body keeps you alive** --- ### 1. How cells keep the engine running Every cell is a tiny factory that needs raw materials and energy. * **Nutrients** from food enter the bloodstream as glucose, amino acids, fatty acids, vitamins, and minerals. * In mitochondria, glucose is broken down (glycolysis & |