The document discusses the physiological changes that occur in the body during periods of increased activity or exercise. It explains the processes of aerobic and anaerobic respiration, including the equations for each. It also describes what happens when oxygen is not available for aerobic respiration, the effect of lactic acid buildup in muscles, and the concept of oxygen debt. The notes section indicates the document is intended to help explain to charity runners the initial effects of exercise on breathing and heart rate, muscle fatigue and soreness after training, and how sustained training can improve the heart, lungs, and recovery over time.

1. Changing Levels of Performance

2. When we have to move fast or exercise what changes take place in our bodies? Why do these changes occur?

3. Aerobic and Anaerobic Respiration What is the word equation for aer obic respiration? When might there be an oxygen shortage in muscle cells? What happens when oxygen is not available for aerobic respiration? What is the word equation for anae robic respiration? What effect does lactic acid have on muscles? Explain the term ‘oxygen debt’. Notes

4. -The initial effects of exercise on breathing rate, pulse rate. -Information on recovery time. -Why their muscles feel tired (muscle fatigue) and sore after training. -The effect sustained training will have on their heart, lungs, recovery time etc. You are a fitness coach training charity runners for the London Marathon. Design a pamphlet explaining the benefits of exercise. Should include: