In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.
Q: Question: If someone has a smaller than average physical heart then it will beat _____ in order to pump blood. 
 Answer: more
A: 
When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.