Hey guys, I was just wondering what you do to prevent cramps during long tournaments. Yesterday I participated in a 15-hour tournament (from 9am to 12am), and played MS, MD, and XD. During my semi-final MS match, I got a cramp in my right calf in the middle of a jump smash. Luckly I had some spray I got from China (called Yun Xiang Jing), which helped to alleviate the cramp and let me continue to play. In the final MS match, I got yet another cramp in my left calf while doing a jump smash. Needless to say, at this point I had no hopes of winning. A bit later, I continued to play in MD, with a mixed-style of play. I focused on covering the net area and setting my partner up for smashes, since I could not jump to smash in the back. We actually made it to the finals, but during the third set at 15-15 I reached a point where both my hamstrings were twitching and contracting, as it usually feels on the verge of cramping. As I tried to stretch this out, I felt myself getting shin splints. I had already taken a few breaks during the match to spray my legs, so I felt bad to take another break (also I ran out of spray). We lost the final match 21-16. I feel like I keep getting cramps every time I play at tournaments. This never happens at practice, even a 4-5 hour practice, because I never give myself the time to really cool down. In tournaments, there is always a wait before the next match. Is the lack of serious physical conditioning a reason for the cramps? Or is it a nutritional issue? I'm really hoping to resolve this so it doesn't happen in future tournaments. My partner played a great game and I was so disappointed that I was the reason we lost.