Exercise and metabolism

• Metabolism is defined as all the chemical reactions that occur in a cell or organism
• enzymes are crucial as they speed up chemical reactions and are specific to one substrate
• Changes during exercise include

  Breathing rate increases

  Breath volume increases

  Heart rate increase

  Muscles contract more

  More energy needed for increased respiration
• Oxygen debt

  After exercise has finished, your body has an oxygen debt that must be repaid due to lactic acid build-up

  To repay this, breathing rate and heart rate remain high even after the exercise has finished