The heart needs oxygen from the blood to keep it going.
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Your heart beats faster and you breathe more because your blood cells need more energy to give to your muscles
Beating of heart need a lot of energy.Mitochondria give that energy.
oxygen
oxygen
Your heart needs blood, oxygen, and energy to function!!!!!!!!
The reason why we need we need valves in our heart is because the valves in our heart will open and close. When the valves in our heart open, they allow blood to go into places in our body where blood is needed. When the blood passes through, the valve closes. They regulate the blood flow.
The reason why we need we need valves in our heart is because the valves in our heart will open and close. When the valves in our heart open, they allow blood to go into places in our body where blood is needed. When the blood passes through, the valve closes. They regulate the blood flow.
The lungs hold air that is breathed in. Oxygen gas in the air moves into the blood. The heart pumps to transports this oxygenated blood to cells in the body that need it to produce energy.
When you run, your muscles are working harder than usual. They therefore need more oxygen and sugar to metabolize, in order to produce energy that they can use to do this work. Oxygen and sugar are transported by the blood, and blood is pumped by the heart.
To pump your blood
In order to replenish your blood supply and make your blood glucose reach homeostasis, you need some carbohydrates which are found in the fluids and snacks. These carbohydrates are what give your body energy and raise your blood glucose. Since carbohydrates, or complex sugars, help give your body energy, and also help your brain function, you need them in order to be able to use any energy at all, including walking around.