Okay kiddo, have you ever heard of a hero named Hercules? He was a really strong and brave guy who went on lots of adventures.
Well, some people believe that he had a special club that gave him even more power and strength. People liked this idea so much that they made a special symbol called the Hercules' club amulet.
It is shaped like a little club, and people wear it as a necklace or bracelet to give them strength and courage.
Even though it's not really Hercules' real club, it's still a neat way to feel extra strong and brave like he was!