Is this a question or an answer?
Visualization training helps athletes to mentally prepare for competition. The process of visualization includes imagining success, focusing on goals, perfecting skills, and increasing one's ability to focus on the task at hand.
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The rhythmic sequence at which your heart beats is called a sinus rhythm, it is when the atria and ventricles of the heart contract.
Answer:
Oxygen
Explanation:
Your cells use oxygen for energy, as a result makes carbon dioxide
