Bayern Munich opened their preseason at Lake Garda in northern Italy by arriving on a sailboat, but when the nautical fun ended, the realities of pushing too hard on the first day of training set in. Surprisingly, it wasn't Arjen Robben (or any other player for that matter) who got hurt in that first session, but manager Jupp Heynckes.

At 40 seconds into the video above, Heynckes tries to show the younger guys how its done and ends up with a pulled muscle and a limp. He shakes his head, realizing his mistake, and makes a mental note to just show his players a video of himself from 1973 next time.