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What Happens During Exercise
Muscles require more energy during exercise. The body generates energy through respiration, which includes aerobic (with oxygen) and anaerobic (without oxygen) processes.
Aerobic Respiration (With Oxygen)
Occurs when sufficient oxygen is available. The equation is: Glucose + Oxygen → Energy + Carbon Dioxide + Water. Efficient and doesn't produce harmful waste, typical during light to moderate exercise.
Anaerobic Respiration (Without Oxygen)
Occurs during intense exercise when oxygen supply is insufficient. The equation is: Glucose → Energy + Lactic Acid. Lactic acid accumulation leads to muscle pain or cramps, producing less energy compared to aerobic respiration.
What is Lactic Acid?
A waste product of anaerobic respiration that builds up in muscles, causing fatigue and soreness. It needs to be removed post-exercise.