September 30, 2013
A lever is the simplest of machines, which utilizes a rigid bar to rotate around a fixed pivot point called a fulcrum in order to exert force on an object (load). If the resistance or load exceeds the strength of the bar, the bar will break. Biomechanically speaking, the arm is a bar, and when the fulcrum is at or above the joint, breakage can easily occur.
July 16, 2009
Food provides nutrients for the maintenance of bodily function and and growth. Good dietary practices insure your health and longevity. Through the years, traditional Chinese medicine (TCM) has developed systematic theories, principles, and methods that have contributed a great deal to the health and longevity of the Chinese people.