Adam looks around, and the gym is empty, with no one around. He didn't think much of it as people usually don't come to the gym in the middle of the day, as most have work or school.
With no one in sight, Adam walks around the gym, observing some of the equipment, touching it, and observing how it feels.
He walks up to a punching bag and places his hand against it. It feels hard and heavy.
Taking a step back, he coils his hand back, takes position, and punches it with a good amount of force behind his fist. *BOOM* The punch creates a loud sound, and the bag caves in from the punch. The bag then begins to shake uncontrollably, and Adam stops by grabbing it hurriedly.
Since this is the first time he ever punched a punching bag, he never expected it to react so aggressively. He has seen videos of guys punching these bags, and they never rattled this much from a simple punch.