When it comes to exercise, two activities always top the list—walking and running. The moment someone talks about losing weight, we often hear the same advice: “Start running from tomorrow morning and don’t stop until you’re drenched in sweat!” Somehow, many of us have developed the belief that unless we’re completely out of breath and sweating heavily, fat isn’t really being burned. Because of this mindset, walking is often underestimated. Many people see it as nothing more than a leisurely activity for older adults spending time outdoors. But is that really true? When it comes to losing weight, improving fitness,…