Agility is the ability of executing rapid changes in any direction. Balance is the ability to move while still staying upright. These two skills are very alike but yet very different. Coordination is the ability of using different body parts altogether to complete a task.
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Blue light glasses provide relief from the uncomfortable side effects associated with staring at screens. The glasses have special lenses that block or at least filter out certain light waves from devices and are also said to protect the retina from damage
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