Why would breathing faster and having your heart beat faster when you exercise your body to do mrs gren?

Because you are getting your blood moving I’m you body and it’s like generating your body

Where’s the selection?

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.