At the onset of a bout of exercise, tissue <u>carbon dioxide (CO2)</u><u /> levels briefly increase due to elevated aerobic respiration. Aerobic respiration, once it increases drastically for a period of time, also increases the carbon dioxide of tissues so as to create an equilibrium within the body.
I think the correct answer from the choices listed is option B. In order for Tammy to get the most for an effective workout, she should u<span>se the machine to maintain or decrease her intensity. Hope this answers the question. Have a nice day.</span>
