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				Which bird could fly with your chest muscles? A. An eagle B. A seagull C. A hummingbird
		35% of a bird's body weight is chest muscle, but only 5% of a human's body weight is chest muscle
				If humans had wings, they would need to look like this to be able to fly, because you need very big chest muscles to lift the wings.
		(Answer - the hummingbird)		Contact Blue Zebra -