Should you hop on the treadmill? Or start knocking off floors on the StairMaster? The good news: If your goal is to get your heart pumping, your legs burning, and your fitness improving ...

The beauty of a StairMaster workout is it's low impact (read: easy on the joints) but highly effective at building the musculature of the legs since gravity is working against you as you climb.

If you’re at the gym and have a choice between the Stairmaster versus the treadmill, which machine will best boost your running fitness? To help you determine whether you should you hop on the ...