How Hard Am I Really Working?

Are you seemingly working hard but not getting any fitter? You may not be surprised, but most exercisers don't know how hard they should be exercising. In my previous post, I discussed one way to measure intensity but most people don't understand that moderate intensity means more than a leisurely pace. For a more precise measurement, find your target zone at mayoclinic.com, then stay within it for at least 20 minutes, 5 times a week (recommendations from the American College of Sports Medicine), to increase your cardio-respiratory fitness.