Why do you take in more oxygen when you are exercising?

Answer 1

Your muscles require more energy when they are active during exercise. Muscles in your body metabolise glucose (sugar) in your bloodstream, breaking it down and taking it in to generate a high energy molecule known as ATP, which is essential for a cells functioning. Part of this process requires oxygen to fully break down the glucose-so when you need more energy metabolised, you'll need more oxygen too. If you don't get enough oxygen, your muscles will not be able to fully break down available glucose, they'll become fatigued and produce lactic acid instead- giving you a sore welling.

Answer 2

When you exercise, your muscles are moving quicker. so the blood cells need more oxygen the carry to the muscles. they do it quicker because since you are moving quicker, the blood cells need to go back to the heart to get more oxygen to give to the muscles. you need more oxygen because your muscles need oxygen more often.

Answer 3

Oxygen is needed by our cells all the time for aerobic respiration, but more is needed during exercise, because more aerobic respiration is taking place. Our muscles convert oxygen and glucose into energy, which is needed for muscle contraction/movement. So, when we exercise, our muscles contract more, therefore more energy is needed, and so more oxygen and glucose are required. During exercise, our breathing and heart rates increase to allow more oxygen to reach our cells, to enable more aerobic respiration to take place. If the supply of oxygen can't keep up with demand from the muscles, anaerobic respiration occurs. Here, glucose is turned into energy without oxygen. Unfortunately, this process is nowhere near as efficient, and lactic acid is produced as a waste product, which is a toxin, and causes muscle fatigue. To get rid of the lactic acid, we need...oxygen again, which converts the acid into carbon dioxide and water, substances that can now be easily excreted from the body. One of the benefits of regular exercise is that you spend less time respiring anaerobically.

Answer 4

In order to work properly our body needs oxygen. To get that oxygen the heart pumps oxygenated blood throughout our body. When exercising the body's demand for oxygen increases as the more strenuous the exercise is. The more the body moves the more oxygen it takes to keep it moving because the entire body is having to work together to go faster, longer, etc.

Answer 5

You need oxygen to help metabolize glucose into energy. Exercise=greater energy demands= more oxygen needed= more breaths per minute.

Answer 6

You Take In More Oxygen when you are exercising because you get warmed up and get your heart going and so your heart goes faster and so you need more oxygen