Do you remember growing up and having your parents drill into you proper manners? I'm talking specifically ones that had to do with your mouth. You know what I mean? [caption id="attachment_4312" align="aligncenter" width="300"] Poor manners cost him a lucrative pro career. 'Chew your food with your mouth closed' 'Don't smack your gum' 'Close your mouth' And besides helping me develop proper manners and etiquette so I won't be a social outcast this also helped me with my sports performance. So thanks mom & dad! But how exactly does chewing with your mouth closed help with sports performance? Well honestly it has nothing to do with the nutrition and more to do with how we take in oxygen and expire carbon dioxide. I've got to give credit to Mr. Sherwin, my high school science teacher, for teaching me some of the following. Below are 4 benefits of nose versus mouth breathing. Benefit #1 - Nasal air is warmed and humidifiedWhen you consider the location and properties of our lungs we know they are in the chest cavity and moist to facilitate inflation, deflation and gas exchange. The more similar the air we breath in is to this environment the better. For example, air taken in through the mouth needs to warmed and moistened before arriving at the lungs. ***I remember when going to university in Regina riding my bike in the middle of winter. In -35 C weather I learned that although you may be tempted to ride quickly to get out of the cold weather more quickly this caused me to breath through my mouth and typically was followed by a sore throat or chest cold. It was a better strategy to bike more slowly and keep my mouth closed. This allowed me take air in through my nose only and...