1. What are the two scenarios/environments in which prolonged exercise does not lead to a steady state?2. Explain the process of using an incremental exercise test to measure VO2 max.a. What physiological characteristics influence your VO2 max capabilities?3. What is lactate threshold?a- How does this threshold differ between trained and untrained?b- What mechanisms lead to the lactate threshold?4. What is the Respiratory Exchange Ratio and what does it tell us?How do you know if you are burning predominantly fat versus carbohydrate?