I believe the answer is the systemic circuit
<span>During this event, the stomach virus caused water to leave the cells, leaving the cell at risk of death from having too much of other substances, such as salt. Having sports drinks can bring the water and salts levels back into balance by allowing isotonic conditions to be re-established.</span>
Answer:A
Explanation:Because she needs the least amount of water in her body to be able to run well
The answer is kettlebell. Kettlebells<span> aren't anything new, but their popularity in fitness circles continues to rise—and with good reason. When used correctly, </span>kettlebells<span> are extremely effective </span>training<span> tools for providing total-body strength and conditioning. The problem is that </span>kettlebells<span> are often used improperly.</span>