Here's a scary one. Have you ever wondered why dogs only live 10 to 15 years while humans live typically 60 years or more? It all lies within our cells and our metabolism where oxygen plays a big part. Oxygen moves energy throughout our cells breaking the carbs we consume into energy. The problem is, oxygen also breaks down our cells in the same process. This is called "oxidation." But our cells also have a buffer against the oxygen, these are called "antioxidants" and are prevalent in fruits and veggies.