Why does your respiratory system work harder when exercising?

Answer 1

When exercising, the cells require more oxygen and produce more waste products. The circulatory system delivers more oxygen and removes waste products as the cellular activity requires. This means the blood flows faster and in greater volume during exercise. This is a result of the heart pumping harder and faster.

Answer 2

because during intensive exercises, the cardiovascular system can't supply enough oxygenated blood throughout the body so to compensate this, respiratory system will work harder by taking in oxygen to bind to hemoglobin to be able to be transported to the peripheral vessels.

Answer 3

in simple terms, oxygen is your body's fuel so when your exercise your body needs more to power you. the other fuel your body uses is the glucose in food and if needed the fat deposits in you. and that's why you should exercise ^_^.

P.S. I'm sorry if this hasn't completely answered your question :). I hope this does help someone b/c I often use wikianswers and it's very helpful to lots of people!

Answer 4

Exercise stimulates sympathetic nervous system or the flight-or-fight response therefore produces the following effects:

1. Dilate pupils
2. Dry mouth
3. Increase heart rate
4. Increase respiratory rate
5. Inhibits peristalsis/bowel movement
6. Inhibits voiding
7. Ejaculation

Answer 5

your muscles need oxygen to make energy, so you need to breathe more and faster to bring oxygen to the muscles.