Question

What is meant by breathing what happens at the rate of breathing during vigorous exercise and why

Answer 1

breathing means inhale of O2 and exhale of CO2.

during vigorous exercise the rate of breathing increase bcz our organs need more amount of O2 for the fast circulation of blood .


Hope it helps u^_^_

Answer 2

Breathing is the process of inhaling and exhaling air. The oxygen from the air is used in the process of respiration to break down food molecules to energy. One inhalation and exhalation constitutes one breath. Breathing rate is the number of breaths per minute. During vigorous exercise, our body needs more oxygen for respiration and production of more energy therefore increasing our breathing rate.