For as long as we can remember, a lot of people have believed that for every 1 pound of muscle you gain, your body burns an additional 50 calories. On paper, this sounds awesome. But unfortunately, its not true.
Does Increasing Muscle Mass Increase Metabolism?
The answer is yes, but not by a whole lot.
Research shows that every pound of hard-earned muscle burns about an additional 4-7 calories per day. Translation: if you wanted to burn 100 calories extra per day, then you need to add a solid 10-20 pounds of muscle to your body and thats a lot of muscle.
But Heres The Good News
The ever-wise Dean Somerset wrote a great post on why this seemingly depressing news can be a bit deceiving. Lets start with basics: even if you were able to add 10 to 20 pounds of muscle (and that would take you years, not months, to do), that extra 100 calories burned per day still wouldnt give you the fat-burning capabilities of a furnace on high in Phoenix in July. But gaining that muscle would still be very helpful for your body and your fat loss goals.
More Muscle Moving Means More Calories Burned Faster
While the caloric burn of a single pound of muscle at rest is very much overstated, the work youd need to do in order to build that muscle would still create positive changes for your body. And then, as Somerset goes on to explain, when the now-more-muscular you exercises, youd be able to burn more calories faster.
So the big outline of this is that adding muscle mass on its own wont help you to burn a lot of calories, but can help you to do more work, which is what will actually burn more calories, Somerset writes.
While adding more muscle doesnt speed up your metabolism as much as youd like, dont overstress the impact on your baseline metabolism. Instead, realize that there are many good reasons to exercise and add more muscle (and drop fat) as a means to being healthier and looking better.
source : bornfitness.com