response to exercise

• when we exercise


  the body has to adapt to meet the increased demand for oxygen
• if the demand is not met

  it will cause anaerobic respiration
• this will cause

  lactic acid to build up and causes muscle fatigue and creates oxygen debt
• what are the ways to repay the oxygen debt

  increasing heart rate --> increases rate of blood flow around the body

  increasing breath rate --> increases the rate of gas exchange in the lungs

  increasing breathing volume --> increases the rate of gas exchange in the lungs
• oxygen debt


  the amount of oxygen the body needs after exercise to oxidise the lactic acid into carbon dioxide and water and remove it from our cells
• to repay oxygen debt and remove co2

  heart rate and breathing rate must stay high for some time after exercise