Use this section as a reference tool to maximize your vocabulary . We realize that some of you are more advanced bodybuilding enthusiasts have already grasped the meaning of these terms but for others, an explanation of what they mean will take your knowledge base to higher level.

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Nautilus - Exercise machine, which attempts to match resistance with user's force.

Negative Reps - One or two partners help you lift a weight up to 50% heavier than you would normally lift to finish point of movement. Then you slowly lower weight on your own.

Nitric Oxide - In the body, nitric oxide is involved in dilation of blood vessels, oxygen transport to the tissues, the transmission of nerve impulses, and other physiological activities.

Non-Locks - Performing an exercise without going through complete range of motion. Preventing joints from full locking extension.

NPC - The National Physique Committee, Inc., which administers men's and women's amateur bodybuilding competitions in the United States. The NPC National Champions in each weight division are annually sent abroad to compete in the IFBB World Championships.

Nutrients - Components of food that help nourish the body: that is, they provide energy or serve as "building materials." These nutrients include carbohydrates, fats, proteins, vitamins, minerals, water, etc.

Nutrition - The applied science of eating to foster greater health, fitness, and muscular gains. Through correct application of nutritional practices, you can selectively add muscle mass to your physique, or reduce body fat among achieving optimum health.