Interviewing Customers no. 2

After my first round of interviews I think my opportunity is pretty high. I believe I talked to the right customers, as I interviewed college kids who went to the gym. I did not really think I needed to change any of my interview questions, because I received great feedback from my last round.  I learned that I still had a pretty good opportunity after doing this second round of interviews.  What I learned from this round of interviews is that you can learn a lot about your product just from talking to strangers.