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Understanding arm strength requires distinguishing between muscle size and functional power. While beginners often experience simultaneous improvements in both areas through novice gains ...

Masseter Botox is injected into the masseter muscles, which move the jaw. Botox can treat teeth grinding and relieve the pain of temporomandibular joint disorder and headaches. These injections also ...

Most causes of new onset muscle weakness are serious. True weakness points to diseases of the spinal cord or its nerves. Nerves carry messages from the spinal cord to the muscles in the arms and legs.