Both times were under similar circumstances. It was indoors, rather warm, and there was a lot of standing around. I started feeling a bit strange: hot, sweaty and light-headed. Moving around was okay, but what I really wanted to do was sit down. There wasn’t – on the first occasion – anywhere to sit down, although the painted concrete floor was starting to look decidedly inviting. I felt as if I might fall over. I tried to ignore it. It didn’t go away.