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How does SMS text messaging work?
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SMS stands for short message service. Simply put, it is a method of communication that sends text between cell phones, or from a PC or handheld to a cell phone. The "short" part refers to the maximum size of the text messages: 160 characters (letters, numbers or symbols in the Latin alphabet).
Is BMI an accurate measure of health?
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But in recent years, more researchers argue that it's not the most accurate way to measure body weight. For years, scientists have said that BMI can't distinguish between fat and muscle, which tends to be heavier and can tip more toned individuals into overweight status, even if their fat levels are low.