Anything that gets my heart going such as an exciting or scary movie, vigorous exercise, a sudden fright or nausea leading vomiting etc will raise my blood sugar. The reason given by my doctor is that all the above cause release of adtenaline - the emergency hormone. This hormone causes release of stored sugar from muscles, readying the body to run or fight and boosting the blood stream with glucose, which diabetics cannot readily handle. If i am going to watch a movie, i bolus in about 20 to 30 g carb equivalent in insulin, then increase my pump's basal rate by 20% for the length of the movie. I avoid vigorous exercise as it takes ages to get the resultant high BSL down and then later i might go hypo. Moderate exercise i manage with reduction in basal rate by 10 tp 20 % for about 4 to 6 hours.
I avoid alcohol because it blocks my liver from responding to hypos. It blocks telease of stored sugar there. And there is nothing worse than drinking alcohol , going hypo and being arrested for being mistaken for drunk and disorderly and being detained whilst the brain suffers potential damage.