I came to michigan to visit family for a vacation and im having a good time but im upset because in 4 days I have gained like 2 lbs and im staying 4 more days and im worried ill gain even more and this is a problem because im on a diet. And I dont know how I gained weight I eat pretty healthy except for today I had cake but I had all small meals for rest of day. How can I avoid weight gain during the rest of my vacation and what should I do at the gym to lose the weight I already gained