Hi, I have written some sentences below using the word "puff". Please say, Is it correct to speak?<br/><br/>(a)Whenever I run up to the hill, I puff hard.<br/><br/>(b)Yesterday I ran two kilometers without stop anywhere. And then I stopped my running near a hotel and puffed for few seconds.<br/><br/>(c)Why do you puff? Did you run?<br/><br/>Thanks in advance.