Several. The one that stands out most in my mind is the first day of our clubbing holiday in Bulgaria last year. I was up at 9am the day we left to finish up packing and the like, we left for the airport at 7pm and took our flight at 1am in the morning. By the time we reached the hotel it was 4am in the morning, and we stayed up drinking cocktails. It got to 9am and most people went to bed except me and two other girls. We went to the beach and explored the area a bit. I went back to the hotel at around 12pm to get to sleep but as soon as I started to get to sleep the boys got me up to go and watch the football at a local bar. then an evening out followed and I didn't get to bed till 6am the following morning. I was awake for around 45 hours... I was terribly ill/hungover the following day.