A very special guest post by Mary Boudreau Conover, BSNed - for those of you who like to know the behind-the-scenes on how your body works during exercise. Every single system in the body is involved in satisfying the needs of working muscles.  Your heart rate speeds up along with your respirations; blood vessels to your stomach, gut, liver, and kidneys constrict in order to send more blood to the working muscles; you sweat and your muscles let you know they are there.  This article is … [Read more...]