Class 7 Biology Respiration in Organisms How faster breathing energizes a person

How faster breathing energizes a person?

  • The average breathing rate of an adult is 15-18 breaths per minute.
  • But during heavy exercise the body requires more energy. As result more quantity of food needs to be broken down to produce more energy.

  

  • This process requires more oxygen which cannot be fulfilled by normal breathing.
  • Due to this reason the person performing heavy exercise breathes faster than a person at rest to get more oxygen. A person performing heavy exercise breathes approximately 25 times in a minute.
  • Fast breathing supplies more oxygen to the cells which in turn speeds upthe breakdown of food resulting in release of more energy.

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