Muscles can be classified in a number of ways: by their possession of fibers arranged in various manners, whether they originate from single or multiple origins, and whether their action is concentric (lengthening) or eccentric (lengthening). Though the biceps and triceps are both muscle groups associated with your upper extremities, they differ in many ways. The biceps and … [Read more...] about Learn How to Build a Strong Biceps and Triceps?