But while the Smith machine has a reputation as a cop-out among some corners of the fitness community, as it keeps the movement on a fixed path, nobody can accuse The Rock of not putting in the work.

The floor-seated overhead shoulder press builds stronger upper body muscles. Here's what happens when one writer takes on 50 reps a day for one week.

Johnson Businge, a gym instructor at Kampala Serena Hotel, says the seated chest press machine is an upright version of the lying bench press machine. They are just two versions of the same thing.