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Exercising requires energy which requires oxygen to make. After the initial burst of energy is used up, not enough oxygen is being supplied to the heart so it then must work harder to pump blood. Therefore the lack of energy causes lack of oxygen causes heart to beat faster to compensate.
Absolutely Your body uses sleep as a rebuilding time for muscles. Your muscles use energy most efficiently. If they never have time to recover then they cannot work properly. Therefore your energy can be depleted. However, lack of energy can be a sign of more serious issues such as anemia or thyroid problems. If this is an on going problem you should definitely consult your physician.
Without nutrients that are at a lack due to starvation, muscles cannot function properly. They can beomce lean and thin without the protein to help them stay strong or grow. If there is no fat for energy, a starving body will begin to digest muscles for fuel and needed energy for the body.
Your body uses sleep as a rebuilding time for muscles. Your muscles use energy most efficiently. If they never have time to recover then they cannot work properly. Therefore your energy can be depleted. However, lack of energy can be a sign of more serious issues such as anemia or thyroid problems. If this is an on going problem you should definitely consult your physician.
A decrease in the pH level causes the heart to beat faster.
Lack of potassium can causes weakness as its deficiency affects the cellular processes. 98% of potassium is found in cells and even a small change in its level can severly affect our Heart, Nerves and Muscles.
Starvation (lack of protein)
by eating good food and rest.
Heart attacks are causes by having blockages in the arteries that surround the heart. This causes a lack of blood flow which in turn damages muscle. And is true so.......
oxygen makes energy in animals. when there is a lack of oxygen in the body, cell respiration stops, and ferminantation begins; this is hwere the cell uses carbon dioxide for energy. this is a temporary fix only, though. it also secretes an acid into your muscles; that's what causes cramps. then, if oxygen gets cut off completely, the cells can no longer use ferminentation and the creature dies.
when the muscles in your mouth do not work properly or lack of effort to pronounce words.
If a coronary artery is blocked, the heart muscles will not get enough oxygen. This condition is known as ischemia. If the condition continues, the ischemia may lead to infarction, or death of tissue due to lack of oxygen.