After a few hours of walking around, as we usually love to do, we were suddenly hit by a wave of exhaustion. We had taken our iced midday juice with us, so we rested on a bench to recoup and drink up. I had to lie down for a few minutes and get my energy back. The juice kept us going for a couple more hours, but then suddenly – We hit a wall. Speech was hard. Walking was too big of a task. And normal thought processing was… well… almost out of the question.