The next morning, the sun blazed through the windows of the gym, casting a bright light on all of the workout equipment. The treadmills, ellipticals, and weights were all turned on and running, even though the gym was empty.

At first, the gym’s owner, Mr. Thompson, thought that someone had broken in and used the equipment overnight. But when he checked the security cameras, he saw that there was no one in the gym except for himself.

Mr. Thompson was baffled. He couldn’t understand how or why the equipment had turned on by itself. He didn’t know if it was a malfunction or something more supernatural. Either way, he was sure that it was going to be a long day at the gym.

He never solved the mystery, but he did notice that the equipment was always turned on and running from that day forward, even when the gym was empty.