Probably my 3rd dan in TKD about 2.5 years ago. I'd recently split up with my long term girlfriend (back together now) and had a flu bug the week leading up to the grading so I wasn't in the best mental or physical state to begin with. The forms seemed to go on and on. By the time it came to the latter rounds of sparring - 2 on 1 and with takedowns and then destruction I was struggling. I don't really remember the fitness test at the end as I just tried to shut my mind off and kept going. I could have done some individual things better, but I think I made good account of myself at the time.

2nd dan is a close second it wasn't technically as hard, but my physical preparation was poor. I ended up vomiting in the toilet(just made it!) at the end of the fitness test.