Well my situation , i walked in their with gatorade, a banana, and a cliff bar i was eating after i had finished each section. I have a extremely fast metabolism and all that thinking made me hungry. Yes to you 10min question its a ten minute break. Its not all that much but its nice to get up and walk around. If you get done early your allowed to leave and take a break but then you risk missing out on test time if your late coming back. They were more worried about cell phones, watches, and caluclators. So be prepared for the worst and then you cant stress over anything.