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Glasses, also known as eyeglasses or spectacles, are devices consisting of glass or hard plastic lenses mounted in a frame that holds them in front of a person's eyes, typically using a bridge over the nose and arms which rest over the ears. Glasses are typically used for vision correction, such as with reading glasses and glasses used for nearsightedness. Safety glasses provide eye protection against flying debris for construction workers or lab technicians; these glasses may have protection for the sides of the eyes as well as in the lenses. Some types of safety glasses are used to protect against visible and near-visible light or radiation. Glasses are worn for eye protection in some sports, such as squash. Glasses wearers may use a strap to prevent the glasses from falling off during movement or sports. Wearers of glasses that are used only part of the time may have the glasses attached to a cord that goes around their neck, to prevent the loss of the glasses. "In all practices in the Seventy-two Arts initially the basic theory is studied and just then workouts are done. At first those who practice the arts train the softness of the sinews and bones and continue to make agile almost all their joints and articulations. Then they set into motion the principle breath ZONG LI, strengthen the internal organs FU, improve blood state, consolidate body strength, control the cinnabar field and concentrate energy inside, overcome their desires and. The strength spreads on the four extremities and the hundred joints and articulations, now a fighter is within command of unlimited power and he can move off a thousand jins. Your arm weighing only ten jins can move something weighing ten thousand jins with a stroke. Your arms certainly are a head, your legs are a tail. Everything is permeated with a single movement, our bodies moves just like a dragon. Teachers said: “Shaolin exercises develop forces with the whole human organism, all joints and bones; you're capable of striking effortlessly elements of one's body. " There is one more saying: “The fist will be the way to obtain all arts and the leg is the base, the foundation of the fist. " Ordinary practice of pugilism includes 70 percent of leg training and thirty percent of fist training. If you acquire pugilism, you can use eighteen types of weapon. If you make use of all ruses of pugilism, you can fight against 10000 fighters. " /Secret Shaolin Treatises around the Pugilistic Art/