Whether you’re trying to tone up for beach season or simply to improve your core strength, a solid ab workout routine is essential. Although you can do core exercises with little more than a mat, many ...

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 ...