EXERCISE

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Across
  1. 3. the ability or strength to continue or last, especially despite fatigue, stress, or other adverse conditions
  2. 5. the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available
Down
  1. 1. a blood vessel that conveys blood from the heart to any part of the body
  2. 2. any of various sustained exercises, as jogging, rowing, swimming, or cycling, that stimulate and strengthen the heart and lungs, thereby improving the body's utilization of oxygen.
  3. 4. high intensity interval training
  4. 6. the main trunk of the arterial system, conveying blood from the left ventricle of the heart to all of the body except the lungs