omg I just needed your advices! Banana and water - noted! I am actually not so sure what light meals mean so at least now I have an idea. And yes, I decided to continue, even when I'm so shy to come back because of the incident. The instructors there were kind and approachable so even with that unfortunate incident, I feel like we have gotten close. Just to shy to go there again but I made a reservation for my next class! Hopefully it will be better than this time, and I'm more prepared.
Thank you for the kind words and advices @erikah. You're the best!