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.
When you exercise and your muscles work harder, your body uses more. oxygen and produces more carbon dioxide. To cope with this extra demand, your breathing has to increase from about 15 times a minute (12 litres of air) when you are resting, up to about 40â60 times a minute (100 litres of air) during exercise.