They're only valid on that exact machine, and have nothing to do with the numbers on a similar machine at another gym. Why can you do 250 pounds on the leg press at your usual gym, but only 200 if you ...

Have you ever switched gyms and tried to do your usual workout, only to find that the machines are a lot harder—or maybe a lot easier? Before you start questioning your strength or your training, you ...

We might earn a commission if you make a purchase through one of the links. The McClatchy Commerce Content team, which is independent from our newsroom, oversees this content. Do you love strength ...