http://AskTheTrainer.com/best-arms-exercise.html Personal Trainer Michael Behnken, MS, NASM-CPT-PES, CSCS Close grip dumbbell presses are great exercises for starting a triceps workout. This is because you can load up heavy weights and use your triceps predominantly. If you have mastered weight lifting, bodybuilding you know what I'm talking about. If you are a beginner, the concept may be a little more difficult to grasp. Even though multiple muscles are working, if you have developed neuromuscular control through training you can choose which muscles work harder. Some call this muscle memory, muscle doesn't have memory but your brain is capable of telling which muscles to work and which muscles to rest. If you haven't mastered this, it doesn't matter how much weight you can lift, you will not get full benefits out of any weight training exercises. http://AskTheTrainer.com/sets-and-reps.html