Head to Toe
Your Brain:
While the brain-to-body size of humans is larger than any other mammal on Earth, it still only accounts for 2% of body weight. However, it uses 20% of the body’s energy. Why? Your brain has approximately 1 billion neurons or cells that transmit nerve impulses. Each neuron creates 1,000 connections to other neurons, totaling a trillion neurons. This means your
Your DNA:
Don’t think about your DNA much? It’s a big deal. According to
Each human cell has around 6 feet of DNA. Let's say each human has around 10 trillion cells (this is actually a low ball estimate). This would mean that each person has around 60 trillion feet or around 10 billion miles of DNA inside of them.
The Earth is about 93 million miles away from the sun. So, your DNA could stretch to the sun and back 61 times. That is one person’s DNA.
That's an amazing body!
Your Heart and Lungs:
Let’s get right to the heart of the matter. Your heart and lungs make everything happen. Together they make sure that every cell in your body (with the exception of the cornea) gets the oxygen-rich blood it needs to function properly. The system is called the
Meanwhile, you breathe about 23,040 times each day. Your