While walking or using the stair-climber or another cardio machine, you might focus on your breathing or heart rate to gauge how hard you’re working. That’s a perfectly good approach—but it won’t tell ...

While walking, hiking or doing other cardiovascular exercise, you might focus on your breathing or heart rate to gauge how hard you’re working. That’s a perfectly good approach, but it won’t tell you ...

After watching Jason Kelce challenge veterans to a push-up contest during ESPN’s “Monday Night Countdown”, I had the idea to find four more fitness tests you can do to assess your fitness level ...