Why Your Amazing Body is Full of Funny Design Flaws!

Did you know that your body is like a house that has been remodeled for millions of years instead of being rebuilt from scratch? Because our ancient ancestors walked on four legs, our modern upright spines are still prone to backaches and hiccups. Evolution [the way living things slowly change over a very long time] kept these quirky features because they were good enough to help us survive, leaving us with a wonderfully imperfect body!