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 you spend a lot of time working out your muscles will be 
 Answer: larger

A: When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction.
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Q: Question: Dwayne Johnson is weaker than Kevin Hart because he exercises less and therefore his muscles have grown 
 Answer: smaller.

A: Exercising muscles increases their size, and bigger muscles have greater strength.
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Q: Question: Mona is creating some vases out of clay. If she increases the mass of her vases by adding clay to them, what happens to the amount of matter they contain? 
 Answer: increase

A:
The greater the mass of an object, the more matter it contains.
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