There are three key reasons this can happen.
First, your metabolic rate. One major part of that is your resting metabolic rate, which is mostly influenced by how much muscle you have. The more muscle, the more you burn at rest. But here’s the thing—running is a catabolic activity, meaning it can actually cause you to lose muscle over time if you’re not strength training too.
Second, there’s your activity level. Your total daily energy burn comes from both exercise and non-exercise movement. And most of it actually comes from the non-exercise stuff, walking, moving throughout your day.
What happens when you start doing lots of cardio? Most people end up doing less non-exercise movement without realizing it. You might run in the morning, but then sit more the rest of the day. So even though you're “exercising more,” you’re not burning more overall.
It’s not about doing more cardio. It’s about building muscle, staying active all day, and being smart with your training.
#metabolicwindow #cardio #running #weightloss #fatloss
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