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The cells in your body require energy to function. To get this energy the cells go through a process called respiration. The cells use glucose(sugar) and oxygen to form energy, water, and carbon dioxide. Blood carries oxygen, glucose, and other materials to cells. If the cells are vigorously used (which happens a lot in muscle cells) the use all the materials the blood can provide them. After resting the cells get materials from the blood again and can function more and are less tired.
What else can I help you with?
Why do humans lose consciousness?
Humans lose consciousness when the oxygen supply to the brain gets low.
How do animals lose energy?
Animals lose energy simply by existing. The more strenuous the activity they are performing, the more energy they will lose.
Where do humans get there energy?
Humans use food for energy.
How do you reduce the weight of a human?
Humans store extra energy as fat. In order to lose fat, the person has to spend more calories than they take in.
What do humans do before using energy?
Humans can't live without energy - they have always used energy.
When do most substances lose or gain energy?
Most substances lose or gain energy when their temperature changes.
When compounds gain electrons they lose or gain energy?
Lose
How does nuclear lose energy?
thermal energy lost
What is energy for?
Humans get energy from the food they eat.
Why do humans have to have food?
Humans need food to use for energy, without energy we die basically.
How many hairs do humans lose a day?
How many hairs do you lose in a day?Is 100 of hairs
What age do humans lose their hearing?
around 30
