It breaks down organic matter for energy (catabolism), it builds up organic matter using energy (anabolism) and it transfers energy for all life functions in the body.When it comes to breaking down organic matter, it relies on macronutrients (carbs, protein and fat, when it comes to building it up, it creates the components for cells, which are the components of tissues.So in order to optimize you general metabolic activity, both the breakdown or catabolic phase, build up or anabolic phase and energy transfers need to be happening faster. replenish 911 reviews