An extra layer of fat carried just below the jaw can give you an extra chin - a double chin. You got it because you’re old and fat, or just fat. If you don’t have a fat neck when you get old, what you might have is a “turkey neck,” loose skin hanging down like a wattle. While a double chin is generally more uncomfortable than a turkey neck, both conditions are likely to block your path to becoming the reigning Mr. Universe.

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