Theo teams up with Hassler to track the escaped Abbie leader, Xander confronts Rebecca about her condition, and Jason learns devastating news about Kerry. Theo and Megan disagree over the Abbiesâ intelligence, as the doctor attempts to communicate with their leader.
Why does heart rate and breathing rate increase during exercise. 1. When you exercise your muscles contract more frequently, which means they use more energy. 2.To replace this energy your body needs to do more aerobic respiration, so it needs to take in more oxygen and breathe out more CO2. 3.hy does heart rate and breathing rate increase during exercise. 1. When you exercise your muscles contract more frequently, which means they use more energy. 2.
Your heart rate increases when you exercise. Photo Credit Jupiterimages/Stockbyte/Getty Images. Your heart rate increases when you exercise, because you are working harder. How much your heart rate increases depends on the intensity of your exercise and how fit you are. Exercise experts differ on how high your heart rate should be during exercise, but they agree that it needs to be substantially higher than your resting heart rate to improve your cardiovascular fitness.